There's this thing, sometimes, when reading fic - not shitfic, because I do read that and I know what to expect from it, but fic with actual thought and nuance, which cares about exploring trauma and fucked up emotional consequences, evenwhen when they're ugly and uncomfortable and awful -, when you realise that while the fic is willing to have the protagonists be angry but get over it with some characters, they just refuse to with others. And it can make sense to a degree - there's always one character that gets under another's skin, and there's gonna be some disagreements that just, due to individual perspectives, are that much harder to overcome. Even though having them work through it - having a character admit how and when and where they fucked up, and how severely, and the degree to which they recognise this, the internal complex, contradictory fuckery - can be fun! Can be nuanced and messy and delicious.
Then you see the fic says "[X Character] Bashing" and you realise you're never gonna get that. That those crunchy, messy, complex, fun scenes in your head? Will never leave it, because the author has decided that while they'll put in all this engaging messy nuance for (so far) literally every other character... for this single one, a flat one-sided view of a character is all they can be arsed to write.
I dunno, yeah, it's fic and you can write what you like, but bashing has always felt incredibly, astoundingly lazy to me.