Jake Haener

Brees joke was in no way him saying his assessment of the interception was a joke. That's a reach being made to try to discredit Brees's assessment because you don't agree with it. You know Brees has more knowledge and understanding of the game than any of us here, so you're reaching to incorrectly try to make Brees's sincere assessment as insincere based off of the off the cuff joke he made afterwards.

I watched the play live and didn't know what to think, because I've never been involved with professional football, especially as a QB. I also watched the replays as Brees explained what happened and I saw what Brees was saying.

You see it different from how Brees saw it. Only Pete Carmichael and Haener know for certain who was expected to do what on the play.

It seems to me you had already decided when Haener was drafted that he's never going to be a good NFL QB. You've actually said as much. Since you've already made up your mind on that, you're only going to see anything Haener does as proof that he will never be an NFL QB. You're going to dismiss anything anyone says otherwise, including Drew Brees.
Four verticals is a common play in playbooks at all levels, I think even a casual fan can figure out that ball shouldn’t be thrown. The vertical space is covered and the DB has a hip angle that lets him break on anything underneath, the QB should check it down and live to see another day. If the DB turns his hips upfield than the WR has a shot, but that never happened because he bailed at the snap (which Haener might not have seen, instead expecting him to turn and run since he started off lined up close to the LOS when Haener looked pre snap).

Haener may very well turn into a good player, its not like this one throw in a preseason game defines his career. I only started discussing the interception when another poster mentioned that Haener does not stare down receivers (which he did here).

I do think his success is very unlikely for reasons stated earlier, and that he has a much bigger uphill climb than training camp reports have suggested. I’ve seen people compare his ability to peak Brees, which I think a casual fan can also easily recognize as not realistic.