I know, right.
If TT had gone for 3800+ pass yards, 23 TDs passing, and 8 ints each of the last 2 years and the Bills had a record of, say, 18-11 and just missed out on the playoffs both years then, yeah I would say he had a decent body of work and should be afforded a few bad preseason games to get his crap together within a new offense. He doesn't have nearly that good of a body of work so he shouldn't be afforded anything especially when a true rookie is severely outplaying him in what is a new offense for him too.