he is tall enough
I think about 60% of people are on board with Tate, but the haters best argument is that he is short. I think we can put this argument to rest. I'm not saying Tate will be as good as Drew Brees (though that would be nice), I'm saying being 6'1" or 6' tall doesn't preclude a QB from being successful.
Drew Brees had a pretty decent college career ("left Purdue with Big Ten Conference records in passing yards (11,792), touchdown passes (90), total offensive yards (12,693), completions (1,026), and attempts (1,678). He led the Boilermakers to the 2001 Rose Bowl, Purdue's first appearance there since 1967. Brees was a finalist for the Davey O'Brien Award as the nation's best quarterback in 19c9. He won the Maxwell Award as the nation's outstanding player of 2000 and won the NCAA's Today's Top VIII Award as a member of the Class of 2001. Brees was also fourth in Heisman Trophy voting in 1999 and 3rd in 2000.") and is doing ok in the NFL if you haven't noticed. And check out his whopper stats his freshman year when he was a backup to Billy Dicken (who?):