I just block everyone who participates in this dumb idea. Even the people posting to make fun of it. I want to live in a fediverse where this stupid idea never existed.
Usually it is the same person who post them, if you are bothered by them, just block those two or three users and you won't ever be bothered by them again.
Personally I hesitated to allow them at first, but it gives a bit more diversity to the community posts, and it doesn't seem to be a bad things. For now I don't think it is too much, even with two posters (the original and his... sidekick? 😆), but if the community subscribers start to down-vote it to hell (like was yours), then I'll ask both of them to redirect those post to a dedicated community, like https://feddit.uk/c/photomode, linked by @Zahille7@lemmy.world
Maybe you think they're lame because those are screenshots of an actual game being rendered in realtime, and not just a picture someone drew for a visual novel with some text over it.
Yes! Katawa Shouju. I don't actually like it that much, but as a cultural phenomenon I love it. Everything about it is hilarious in all the wrong ways. It's perfection.