Those two things are not mutually exclusive.

And not allowing them kinda sucks for people who want to talk about smaller, less popular games (or niche topics/interests in general), because any posts on an overarching all-games-including community about a small niche indy game is almost certainly just going to get swallowed amongst the flood of posts about other games, and even if there’s people in that community who would’ve engaged with the post, most of them are likely to miss any given post, because they only make up such a tiny fraction of the total members.

For example, I love discussing the Eragon book series, but there’s no Eragon dedicated community on Lemmy, and I don’t really want posts about every other fantasy work ever in my feed, so I don’t really want to subscribe to overarching fantasy book communities.

And sure, if I explicitly feel the urge to talk about it, I can browse a big sub and filter for Eragon content, but this still robs me of the ability to see Eragon Posts Show up in my feed when I’m not explicitly looking for them.