I can't stand him - but I think that falls under he mistakes category. He has learned the job isn't as easy as it looks. But like all youngsters - they think they know everything right at the start.
In one sense, he is not too unlike Rodgers, who seemed out to prove many wrong on the common misconceptions about the qualities of Premiership, and especially British, players. Given a second chance, I wonder if Rodgers would insist on his early bravado, his constant chasing of overpriced players from Swansea and Southampton. Probably not.
Regardless, you can hardly feel sorry for either Rodgers or Sherwood. These guys were extremely lucky to land the jobs they did in the first place. They were handsomely paid, and will have lots of money in the bank to get over the sacking. Sometimes, sacking itself is a big lesson, as otherwise, some managers are very stubborn to change their ways. They have to take a step back, and look with a cool head and analyze their mistakes. Till the very end, despite how close he was to the sacking in the past summer, Rodgers insisted on the same mistakes. Supporting him in his wrong ways and giving him more money did nothing to fix his mistakes. They just never learn.
Now that these young managers have lots of time in hand, they can sit down and analyze their mistakes.