The fact that you said he is inaccurate leads me to believe you are reading draft profiles and not watching his tape.
The Chiefs, Steelers, and Giants are all looking at him closely. Those are good front offices that understand QB play.
He has great pocket presence, accurate in the pocket and when pressured, a lightning release, big arm, can throw on the run, and has leadership skills. Works for me.
The mechanics crowd are focused on a process, not the result.
Mahomes is thought of as the best QB in the draft by some NFL scouts. I like his accuracy more than Dak from last year.
http://draftbreakdown.com/patrick-mahomes-ii-is-the-most-talented-quarterback-in-the-2017-draft/
It finished him. He did play one good game after that but it's like dropping your iPhone in water and having it work for a few hours.
He became so gun shy that he earned the nickname Trentative.