He should go but it's not going to happen until 4th is gone so we are wasting our time moaning. So to answer some of your questions:
Are our players objectively only the 6th best team in the Premier League? Our first XI is 5th at best (ahead of Arsenal) it's not even a debate in my opinion. The defence is garbage.
Would you take Henderson, Gigi and Milner in our midfield or Lovern in our defence? What have any of our CMs done to be considered better? Is Herrera better than Milner? No, Fred - Wijnaldum? No. Lovren is as good is if not better than any of our CBs bar Smalling, and he's just their back up.
Why was the same squad 2nd last year ahead of Spurs and Arsenal when they have made no real investments? Why were Burnley 7th? how did Leicester win a league? Statistics were showing that we were over achieving last year, helped massively by De Gea heroics, unfortunately it's caught up with us. Would you honestly take our back 4 over Spurs? Any of our 4 attackers over Kane, Alli, Son, Eriksen?