That’s because Steam/Proton has mostly solved this (with some qualified notorious exceptions), which used to be a real problem even just a few years ago, but not remotely as much these days; the meme is mostly outdated by now, I’ve lived both cases and it used to be a pain but these days? people are spoiled by Valve and many have never lived the OP situation (which is great news!)
This is by no means a vital service, but Imgur. Not the image hosting part itself, although the multiple self-hosted alternatives available are mostly aimed at photographs and surprisingly very few if any to memes and reactions for chats, forums and social media. On the other hand, the particular use case of sharing memes and meme dumps is not being fulfilled by anything else at the moment. Go to Imgur even on it’s current sorry decayed state and at any time you’ll find multiple people sharing image galleries, usually of up to 50 memes at a time, sometimes more. Lemmy, Mastodon and Discord servers try to fill that gap but right now they can’t.