So I was talking to one of my friends this morning about ST, and according to her, her brother (who's a fan of the show too) believes that Will's arc throughout the show revolves around helping Mike and El solves their problems as a couple. Not as in it's part of his arc, not as in it's something he needs to do to fulfill his arc, as in... that is his arc. Like, that's what he is meant to do, optimally, in the show, and byler being canon would directly contradict his "character development".

...I think we can conclusively agree that this is the worst Will take ever.