He is talking about GOG in general, not for this particular game. I suppose he is one of those users boycotting GOG by not buying titles here because, in their opinion, GOG is allowing some sort of DRM nowadays.
Are they Steam fanboys trolling over here?
GOG previously announced a partnership with Epic Fail Games Store in which DRMed games (from Epic) would be available for purchase via a new store within the GOG Galaxy 2.0 app. This was confirmed by GOG staff member Chandra on the GOG reddit. By the way, the announcement of the partnership on this forum was done in the Galaxy sub-forum in as subtle, and some would say "weasel word-like", way as possible. It was vocal users who brought it to the attention here on the main forum iirc.
The flagship game Cyberpunk has "My Rewards" singleplayer content locked behind Galaxy client usage. In other words, the player is not permitted to unlock the content if you don't use GOG's proprietary online client. That is unequivocally DRM by any reasonable (imo) definition, and it is being done by CDPR themselves!
More recently, I recall (but can't find the quote at the moment) that GOG said something to the effect that they respect developers' decision to design their game the way they (the developers) want, including some DRM, as long as it is only minor and doesn't make the game feel "incomplete". Again, I apologize for not having the exact quote in front of me. Please clarify for me if I'm misunderstanding.
By the way these are just the more recent "hits". A now-removed game in For the King at one point inadvertently contained a Galaxy requirement to even get to the start menu. DLC for Deus Ex Mankind Divided was, evidently, not tested via offline installers as that was inaccessible without Galaxy at launch (but fixed after).
Additionally, for what it's worth, offline installers have consistently been found by users to be outdated behind Galaxy versions in some cases weeks, in some cases months, in some cases years, but that itself is not DRM, just a representation of what the priority is.
I am as anti-Scheme as they come. Can't speak for others boycotting in whatever way they are, but it's this DRM nonsense that kept me away from PC gaming for well over a decade until I found enough big DRM-free releases on GOG to justify rejoining this world. That's why it's so important to me at least, to nip it in the bud wherever it is spotted. And, much more generally in gaming and life, we have seen again and again that if companies exercising anti-consumer behavior are given an inch, they will take a mile.
My boycott is different from others in that I will buy what I consider must-haves...still trying to determine if The Forgotten City is that. It sure looks pretty to me regardless.