The answer to the question is down to psychology. Pochettino is a fantastic manager and in my opinion he has taken his project as far as he can. Within the constraints of the wages he can pay players and spend on players he has achieved great things. The clubs we compete with have managers who have won something and this is the difference.
Pochettino doesn't seem to be able to get the team to the next level, over the line. I think there are managers about who could pick up Spurs and develop them where Poch falls short.
As a Spurs fan I feel lucky to have Poch but there is a time to be ruthless. If Poch was the Man City or Chelsea manager he'd be looking at the sack this season.
To me Benitez would be a sensible choice of manager. He's tried and tested and surely could be poached.
I don't agree.
I don't think we should depart with Pochettino in a situation where we are 3rd year in a row in CL AND we are moving to our new stadium.
It might be that in the long term he proves that under his guidance we won't handle the most important games, and then - yes. But currently there is too much uncertainty around the club. So let's stick with him.
He doesn't lack "the capacity", he just hasn't seemed to learn how to do it yet. I think very few are suggesting he's "incapable". I don't want Poch to go- I'm personally very happy with his management overall.
Poch is young, management is long, and he has time and capacity to learn from his mistakes and improve his end of the game too. If he can't do that, however, then there is an actual reason we would consider getting a new manager.
I generally agree with your points. But for the love of god, let's stop this "Poch is young" mantra. He is at his prime age as a manager, very many of the most acclaimed names in the game are as old as he is. If you missed it here very many worlds top managers Emery (46), Zidane (45), Simeone (47), Guardiola (47), Conte (48), Di Francesco (48) who are very much around Poch age (46). Then there are ones who are bit older but have won things lot earlier Klopp (50; was 43 when guided underdog Dormund to German double) , Allegri (50; was 42 when won Serie A with AC Milan), Mourinho (55; when he was 46 he had won CL with 2 different clubs; 3x EPL champion; 2x Italian champion; 2x Portugal champion) our own former manager Andre Villas Boas was 32 while winning Europa League with Porto! He was young coach at the time.