Because some of our more impatient, spoilt fanbase (usually not match-goers to be fair) walk around with an entitled 'we're Manchester Utd, we should be challenging' attitude, even when the reality is our squad and the way our team has been run at Board level has been a million miles off the standard required to win major trophies. Many who initially opposed Ole getting the job couldn't then admit they were wrong when he steered us to two consecutives CL finishes and tried to shift the goalposts to 'well, top four isn't an achievement, we should be winning trophies', as if City/Liverpool/Chelsea didn't exist and the last 5/6 years hadn't happened.
That being said, I have now reached the point where I do think Ole needs to be replaced. I agree he has done a good job of getting us from C to B, but we now have a fantastic squad with a good age profile to be competing for trophies. We can't afford to waste that, not with the quality in the PL and the wealth of the other teams.
What I have seen so far this season is very, very concerning. It's not just the results for me, it's the chaotic approach Ole has taken in trying to make us a more aggressive, front-foot side. It's the hardest thing to do in football, and it's why super-coaches like Pep, Klopp and Tuchel get the top jobs. They know how to manage teams full of superstar egos and also how to ensure that they get enough players into forward positions against mid-table/weaker sides, without leaving themselves vulnerable to the counter.
Ole's approach has been embarrassingly, shockingly naive, and has basically amount too...'well, if I throw more attackers on the pitch, we'll score more goals".