How many games are you playing at any given time that you need a dedicated third party tool to fetch and apply automatically all their updates? I have difficulties to imagine a situation where this is actually humanly possible.

Do I start with the grammatically incorrectly sentence?

Or do I start with the argument that:

Heroic is completely different to Steam: No it's not.
Heroic is completely different to Galaxy: No it's not.
Lutris is completely different to Steam: No it's not.
Lutris is completely different to Galaxy: No it's not.

I do without launchers, but I do understand this mindset. There are lots of games with near-infinite replayability, and if you like them, you basically keep them installed and want them up-to-date for whenever you next feel like playing them. Having to then go check if you 'need' to install updates is a real barrier.

I personally have something like two dozen games I revisit 'regularly' (between three times a year and once every other year - think Slay the Spire, Monster Train, etc, but also Surviving Mars, Stellaris, OpenTTD, Transport Fever 2, Mini Metro e.a.), and maybe twice that many which probably have a point at which I'll consider them done, but which I've temporarily abandoned before reaching that point, while I can imagine returning to for a second bite at the apple when I feel more like them than I did whenever I abandoned them.

I think this is the part where my comprehension gives up. To avoid having to check for updates once (right before starting a new playthrough), people would rather check for updates all the time?

I really don’t get that, and I’m someone with literal thousands of games, all bought from DRM-free stores, with offline installers automatically downloaded every night if some new ones are available. All of that without using any kind of store client.

The only time I check (locally, since I already have the up-to-date installers locally) if a game I want to play got updated since last time I played it, is when I’m going to play it again. Even for games I replay the most it does not amount to more than a couple times in a year.

I remember being ask about this subscription months ago in a survey but for some reason I wasn't informed that it was now available...

Well I'm sorry GOG but I couldn't care less about a forum badge and access to a random Discord server.

I will admit, I use Lutris not for the store features, but more as a convenient way to launch things, as I prefer not to have GOG's useless shortcuts cluttering menu entries. I use InnoExtract to dump the games out in a designated LZ, and the point the application to a stock Lutris entry, then twiddle with the levers until it works.

I gave Lutris a try a couple months ago, but it flat out refused to install any game as long as I did not give it my GOG identifiers. Making it less useful than a brick. When I asked for help on their forums, I got a confirmation that it acted that way on design, not by accident.

Of course there is no way I’m going back to it. I don’t see how it could have appeal unless one is already used to store clients, be it Steam, Galaxy or any other one like these.

Many words come to mind, but "convenient" is clearly not one of them ;)