I feel ya, some of the posts you said that on, probably should be NSFW. But not a romantic kiss imho. Other sites solved this ages ago with explicit, questionable and safe tags.
I think it's ridiculous that Lemmy adopted the binary NSFW option from Reddit. With the Ukraine war and people posting videos as NSFW with body parts laying around. I don't want to see the anime pictures in the same bucket as that either.
There needs to be more tags and that would make everyone happy.