People like Tea and a few others have made very clear they consider outright multiplayer content or games, like MMO, to be DRM even if the game isn't playable solo.
Multiplayer content or games (etc) in itself does not constitute DRM. It being outside of the grasp of players, playability solely controlled by a central instance is what makes it DRMed.
They don't understand why it's not feasible to just make 49 AI bot for a boss battle made for 50 people.
Whether some alternative solution is feasible or not doesnt change whether something is DRMed.
And I'm not trying to insult these people, I'm just saying that "outside of multiplayer" is itself contentious in this thread. It also begs the question regarding user-generated content. Let's take, spore or Warcraft 3. Would you want to have to sign up to a third party file dump site just to be able to play maps with friends because there can be no online sharing? And the company doesn't want to risk file sharing security flaws in private games. Do you want to have to have an expensive file sharing site for every single animal, building, vehicle, and space model designed by a player? again, no insult, but it does make a lot more sense to have it all handled by a centralized server when you consider these things.
I see no fair reason for making the centralized server a requirement in your example. And whether people want a DRMed centralized server or not doesnt change what is or isnt DRM.
helped further by moderators actually speaking up and not quietly erasing posts or entire threads, like Valve does.
They did erase entire threads. And if you are unaware of that it is evidence of that having been done quietly.
If I can't access content that is in the game b/c it's required multiplayer component for some reason - yep, that's DRM. If I cannot say battle bots and run around maps all by lonesome myself while offline; that's right, the skirmish mode is DRM'd. In the old days - skirmish modes like Quake 3 Arena and Battlefield 1942 could be played offline.
These days - see COD games' skirmish mode w/ progression (that's its usual multiplayer component) and Battlefield games since BF3's MP - yep, I literally CANNOT play this content and frag around these maps and bots (if there are bots) b/c....THEY want me to play online w/ other players; and likely, these days, it's on THEIR central servers.
Matters are even worse when...well, there's no players online to play with b/c they're likely playing something else. What a waste of the talented art team, map making team, development team, team that made the engine or re-worked it (if it's in-house) - just b/c nobody's even playing online.
There's also the central server part. Will I be able to play this content, if they pull their server? Well, if there's no TCP/IP support, no LAN, and/or no local multiplayer offline - that's right, can't play it.
DRM manage how the game's played. It's Digital Rights Management
- hence its name. It might not be in the normal perceived sense of DRM like that in Anti-Tamper junk like Denuvo; classic disc-based DRM like SafeDisc or Securom; limited installs and online activation for first-boot ever like say Internet-based versions of Securom, Tages, SolidShield, etc; and/or these online client-apps like Steam that require that program running to install, activate, and maybe even go as far as play while likely online - but yeah, it's there. If I buy a game and can't access it - yup, it's DRM'd, as it's managing what I can do (or not do) with certain content.
If progression is Hitman 1: GOTY style (and any of the newer Hitman games since 2016) that lock progression to IO's servers just to play those parts of the game - yep, that's DRM. I literally just cannot use specific content, while in offline mode - such as certain disguises, outfits, exits, weapons, etc...to do some stuff in this game and its cool sandbox. It's literally limiting what I can do while offline; I can only do story mode and not progress while offline, severely limiting a lot of the game's actual appeal of replaying the game & experimenting w/ each sandbox-y level.
Okay, so let me go play my wonderful copy of say Tabula Rasa, which is on disc. I really want to do some missions and explore this game-world. Oh, right - let me just put my soda on the CD/DVD here, as this game's a coaster b/c its central server got pulled. Nobody ever re-worked the game to work offline w/ bots or anything - so, looks like this'll make a nice coaster. Defiance, there's another MMO - can't play that one.
Let me go tackle The Secret World offline - oh right, not happening. I played a lot of the game and its first content area by myself...except for the fact that other players would often run around, help out for a sec b/c I was on the map battling an enemy, and then just move on. They could say create bots to "monster closet" their way behind me Doom 3 style and then instead say join the fight, if they wanted to...and then when the enemy say dies, the bot could just run off on their merry way. What's crazy - this game has a lot of good writing, dialogue, and voice-acting - which is often seen a single-player friendly.
Let me go play Diablo 3 PC version and its single-player content offline. Oh, right - PC version in full still requires online, so that ain't happening. I solo'd D3 & RoS PC version purposely and just fine without other players - PERIOD.
Same could probably be said about Back 4 Blood too, as even it's limited solo mode cannot be played offline...and that's not even getting into the fact that progression is locked similar to Hitman 2016 (and newer Hitman games), but now it's worse as that game's only-online in full and progression (for unlocks for weapons, other characters, heroes, etc) just only happens in multiplayer w/ other players. Will this game even work, when the server's pulled? I'd....doubt it; pressing X already to Doubt.