Kelly's point is that there are a lot posts saying that Nix doesn't have a clue what to look for in a QB and we're doomed because he won't be able to select a good one this year. The snide comments about this are all over the board.
What we know is that Buddy liked Newton and would have drafted him if he was available at #3, other mentions about QBs were in terms of what he was looking for in a prospect (always with Gailey's offense mind) Strong enough arm, good mobility, good enough size for the position, ample college experience (# of starts) I'm sure those parameters are not changed.
My take is that NIx had good communication with Gailey and they decided to keep drafting other positions because they agreed Fitz was good enough to put points on the board to win games. They chose a plan and that plan failed, it doesn't mean Nix doesn't know talent at the most important position in football.
Can he fail, of course he can, but until he does not pull the trigger on one as the Bills GM, the posts claiming he doesn't have what it takes to select a good QB are wrong.