Wise words from DesignStudentDaily's NuckYeah herself. There wouldnt be fanfics & fanart (especially slash fics & slash art) without characters going OOC even the slightest.
Tbh with the fandoms I'm in, I always stick to the canon, thats one of the reasons I don't tend to ship characters unless it's canon. Thats why I didn't like yaoi back then cuz most of the paired characters are straight & I dont like the idea of gay-ifying straight characters, likewise with CisHet-ifying LGBTQ+ characters. Most of the fandoms I'm in are bands & youtubers. And these people are mostly married or in a relationship so the idea of shipping them with each other kinda made me cringe. That's also why I don't particularly enjoy AU fanart.
But lately I've grown more tolerable & realized that we'll just have to let people enjoy things & express what's inside their head.