I've never felt moved to sign up for another club's forum before but reading this thread has inspired me to.
He's as awful as you think, but reading your posts on your current predicament it seems very similar to our relegation season.
This thread is worth a glance to get an insight into what we thought of him.
https://oatcakefanzine.proboards.com/thread/302240/nathan-jones-view
I cottoned on early doors that he was out of his depth when he gave our players 2 weeks off over an international break just after he'd joined us. The excuse being he'd needed to take stock of the players. At that point we were safe and he literally wrote the season off in the press and gave the players the opportunity to just down tools. At that point I was done with him and he should have been written off at the end of that season. Our board aren't renowned for being decisive or having any form of plan though.
I've suffered some dross in my time following us but Nathan Jones is the only manager who has come close to me chucking my season ticket in, and I suffered every match home & away under Chris Kamara!