I'm not going to say that this is the worst thread started (though it would be if we didn't have other knee jerk goofy people posting here) or that it is from the least informed "fan" (we still have the Landry is a bust folks). However, his 75% puts him in good company historically.
NFL Active Field Goal % Leaders | Pro-Football-Reference.com
Of course, nobody is Gary Anderson (who's only miss all season allowed his team to stay home instead of winning the NFC championship).