I think it's because the ones that don't like Poch tend to really not like him. I don't want him because, in my opinion:
- He's at best a top 4 level manager
- He never showed signs to adapt to different players, only came with 1 idea and when some players declined, that's all there was. Happened at Spurs, same dead feeling at PSG
- That one idea came at a good time and it's no longer anything new. He had his time in the mid 2010's and it's come and gone and now he's not going to have the same impact anymore
- Of course, his lack of actual success while basically constantly discarding all cups to be the 3rd best team in the league at best
- His play style isn't actually attractive nor is he an attacking coach. Its an underdog style focused on hard work and defensive solidity, with a world class striker in Kane and Son at the other end providing the goals to get results. Solid defence, hard working press off the ball and reliant on individuals in attack is about the extent of his tactics. It wouldn't translate that well here just like it hasn't at PSG.
- At PSG, they've clearly dropped a level with all their underlying stats, especially attacking, since he's taken over compared to Tuchel. And Tuchel is a very defensive coach. And PSG just signed Messi, Hakimi, etc this past summer. We'd be appointing a manager who has repeatedly shown his ceiling is not on par with the managers of the top 3 clubs. So we would be appointing a manager who won't close the gap and continue the cycle of top 4 fighting without real challenging.
- Pochettino has a horrible record against both Pep and Klopp (combined 5 wins, 9 draws, 19 losses in 33 games)
I would rather someone that we don't quite know their potential, over somebody who has both shown that he can't compete with Pep/Klopp, and somebody who has shown a clear drop in performance despite the signings compared to Tuchel, while in charge of PSG. Appointing Pochettino is appointing somebody who will at best, be 4th best.