I think most people are missing the point and just don't truly know what it takes. What most fans don't understand is that to win the league...you don't just need a good first 11, you need a really top-tier squad. No matter how good your first 11 is, you will find teams like Wolves who are ready for the game and just don't make mistakes at the back, no matter how much you force them. Furthermore, when they have the ball, they have carriers who use it well. Even peak Liverpool and mancity struggled against teams like Wolves who had carriers like adama traore...they minimize your strengths and will hurt you in the space behind because your team is keeping a high line.
The real difference maker is having a deep squad with quality...when you can remove Garnacho and bring Sancho or remove Anthony and bring someone like Amad etc. That's why I don't understand fans who keep saying things like we should send Amad out on loan again (yet we struggled when Anthony got injured last season) or those who say we don't need MG (we may not like him, but we definitely absolutely need him...this is why Ten Hag is okay with bringing him back).
Being able to sub Rashford, Rasmus, and Anthony for something like Garnacho, MG/Martial, or Amad is the stuff that allows us to break teams like wolves....defenders are tired, and you are bringing on top-tier quality and pace. They will eventually give out the goal and once you have it you can easily go 3 or 4 up after that just because you have fresh legs while they don't. Mancity did this with their squad last season... Foden isn't working, bring Mahrez. if Haaland has failed then bring on Alvarez. This is why Ten Hag says we need a deep squad and why we need someone like Amrabat urgently. Amrabat may not replace Casemiro but he will help him and he is another massive option off the bench. We need all the quality we can get because every team we are competing against has top-tier quality waiting to come off the bench. The funny thing is we used to have a top bench under Ferguson...giggs goes off for Nani, Anderson on for Scholes or Carrick...etc