To be fair... the Jets way (drafting a bunch of QBs and keeping a vet), and the Bills way (getting a middle of the road guy from FA) both fail more than they succeed..... in fact all methods of getting an elite QB fails more often than succeeds, since elite QBs aren't exactly common.
If this upcoming draft was seen as a strong QB class, I'd feel a lot better about letting Tyrod go. but as it is, there's no clear upgrade available in FA or in the draft from what I can tell, so we stay put until there is. It's pretty logical imo.