Man these kinds of attitudes towards characters I'll never understand sometimes. Like, I'm an unapologetic coomer through and through and I play a lot of FGO. It has a lot of cannon relationships betweens servants and I got no issues with them? Hell, some of them are written well and I enjoy the interactions between them too. Just let the devs write characters how they want for fucks sake, not EVERYTHING needs to be some sorta loveless void where the sole existence of every character's only purpose is for (you). Sometimes it's nice to show characters having outside lives and relationships, it can make them more endearing y'know?