I have been saying this for a while, too. A lot falls on Sanchez, but whatever Cavanaugh is teaching isn't sinking in.
But to answer the question about Cavanaugh not getting heat ... If we could poll 100 of the media experts, talking heads, NFL fans, etc., not even half of them could tell you who the Jets QB coach is. Apparently, it's information not needed when formulating their opinion about the team and sad state of quarterback play. It's too easy to say "Blame Tanny!" or "Fire Rex!" or "Sanchez sucks!"
Most of the best coaches (any sport) weren't great players.
Yup. I think Peyton Manning would actually be a terrible QB coach... the way he understands the game just can't be imparted to others well, like a genius physicist who is a bad professor. By all reports he has never mentored any of the backups on his teams, to the point of insisting on taking every single rep in practice for his own benefit.
It's shameful. I know he is listed on the website as the QB coach, but has anyone ever seen him on the sidelines, you know, coaching? The website credits him for Mark's red zone improvement last year, and says NOTHING ELSE! Of course that was due to Tom Moore, not any completion percentage improvement or anything like that. If no one else wanted the job they should have just left it vacant for all the 'help' he provided. It is amazing to me the ability of some people to suck down a paycheck with absolutely no results or accountability. Vinny Testaverde's niece could probably do a better job.