i think what people dislike about other reblogging fanart as kin is that it gives off the impression that the reblogger is treating the picture as a picture of themself/something the the artist drew for that reblogger specifically, so it makes the artist feel like someone else is claiming the picture as their own
That makes some sense, I’m sure most people aren’t actually trying to claim the art but no harm in people trying to feel secure about that kinda thing


















