I think that's an overconfident opinion. It's entirely possible that neither Liverpool or Chelsea will have a coaching problem and have great results, what then? They'll be making excuses for the Manchester United coach again. If something isn't working it needs to change, you don't look at it hoping it will fix itself, that's not how it works. So replacing a broken element in the team would be a good idea
When it comes to the Manchester United, what is broken is the manager himself. He's not gotten that true and real connection with the team players, rather he just work with them as their manager is what I feel. Hence he's not able to get the motivation he needs from.each and every player he needs in his toolbox. All I advice the team to do and the club in the entirely is to sit well and have an open discussion between the players and the manager of the club so as to fix all the differences between them. This is if Eric Ten Hag is to continue as a manager. Personally, I like the guy and he's hardworking but I need him to control himself the more to become more of a sportsman than a boss to the players. Let him.be more magnanimous at heart.
Yes, that's right, you make a very good point about him doing his job, it feels like he has no passion for the job at all. A coach is not only supposed to do training, a coach is the person who will support you outside of working hours if necessary. He's not as close to the players as any other coach. All in all if they find another coach I think the game will be completely different, it won't be worse for sure