The thing that sticks with me the most about Steven Universe is that Bismuth isn't left to just become another example of someone who Went Too Far that the narrative ultimately discards as Just As Bad As Their Oppressor, but actually reconciles with and ultimately rejoins the rest of the Crystal Gems.  Plenty of people will say that Steven Universe is unrealistic in how it handles certain conflicts, which is an assessment I'd agree with, but I'd also say that there are plenty of stories just as unrealistic in that regard that are also significantly less aspirational when it comes to characters like Bismuth.