I’m also not a huge fan of the art posts, but going by the vote counts on them other people seem to enjoy them so imo they should be welcome here. Not to mention @LadyButterfly@piefed.blahaj.zone posts a lot of other really great content and is generally a really positive force for this comm (and the fediverse as a whole imo) so it’s not like she’s flooding this comm with only art-themed posts or anything.
At the end of the day this is a community space, and the community seems to approve of these posts - so if they’re not meant for you and I specifically, I think that’s okay.