No comment on the art, but the proliferation of basically the same content across dozens of communities is irritating. I'm tired of playing whac-a-moe.
No. I include credits in the title, and links in the post body. Community rules require the latter whenever feasible.
I post content that fits on more than one community as cross-posts, meaning it de-duplicates as long as you use a client that supports that.
Though it's not even a dozen long yet, you may use the list in the sidebar as reference for what to block. You claim to have been playing whack-a-moe, but you are commenting on c/cybermoe, one of the early ones, started over half a year ago.
If anime content isn't your deal, maybe block the whole ani.social instance as soon as .world gets around to installing v19.
Each moe community has a slightly different purpose, and they are under no greater obligation to get out of the way of users they aren't for, than any other community on the fediverse.
The beauty of the fediverse is that we all get to curate our own feeds. If you want to be "protected" from the mild inconvenience of manually adjusting what you do and don't see in your feed, consider offloading the problem to a recommendation algorithm by switching to TikTok or Reddit.