I'll explain it to you.
It's not 'Tyrod hate'. It's that fans are sick and tired of a team that for 20 years has failed to have an intelligent plan for the QB position; instead fluctuating between trying to get by on the cheap and when that fails and they are out of options, making desperate and stupid draft moves.
They wasted four years with Fitz, while eschewing guys like Wilson and Cousins, because of the same thinking we see on display about Taylor: "if he just gets a little better" or "if we just had XYZ around him", or "we were so close last year" instead of admitting that those guys, while not terrible QBs, are never going to be better than just ok, which is not good enough in the NFL.
So just like they refused to draft a QB until Fitz had completely gone bust; post-EJ they went back to the 'get by cheap' plan and ignored QB in the draft, except for a couple token late round long shots. Three years later there is still no apparent future QB on the team and people are clinging to Taylor.
If you told me the Bills were going to draft a top-3 QB next year and keep Taylor until the rookie was ready, I guess I'd be ok with it. But frankly, Taylor doesn't seem like the 'mentor a young QB' kind of guy. He's not a student of the game, he relies on instinct rather than a deep understanding of NFL defenses and how to beat them. And you'd have the same sub-set of the fan base screaming that Taylor should be the guy and a QB controversy is a bad idea.