He really isnt. People give Sam a lot of guff, but he is honstly one of the best at what he does. I didnt want him, and I dont want him back, but how anyone with a grain of footballing knowledge claims him to be bad at his job is beyond me(you didnt, just talking here). Silva would need to prove himself for a decade, doing the most thankless, boring, yet high pressure jobs in the prem to be mentioned in the same sentence. A lot of decent to good managers have gone down with teams, but Sam constantly avoids it, no matter how bad the team is. He is amazing at what he does, and deserves credit.
Again tho, would not want him back. Too boring football.