What I think is REALLY annoying is when some people like Homestuck and never complain about the art style but then complain about the Steven Universe art style not being consistent.
I personally dislike the complaints about SU’s artstyle not being consistent most of the time, BUT I could understand the difference between these two cases. For one, SU is a cartoon airing on Cartoon Network so it’s made more professionally than Homestuck is. Then, people working on the SU crew are on the same page about how characters should look and act- Whereas a lot of the art in Homestuck is influenced by headcanons of the specific guest artists. Finally, while cartoony, SU has a specific look, while HS’s look evolves from bit to bit, not to say it plays around with the ‘blank slate’ look, where you only get some prominent characteristics like the hair shape and that they wear glasses and otherwise you can go wild with other headcanons, making them inherently more malleable. You can go from Hussnasty to Hero Mode to SBaHJ and then have pixel art and detailed guest art of the characters within the next flash, and that’s just how things are because it’s how the story plays around with art styles.
Also one of the big artstyle complaints in SU I’ve seen is like, showing the first episode, then a more recent episode? You can compare among recent episodes if you want, but you cannot put the first Episode as a comparison point because the artstyle itself has evolved a LOT since then.