The problem is, Ole has assembled arguably the best squad since Fergie. There is a great sense of harmony and team spirit. I personally dont think Ole is good enough to take us where we feel entitled to be ( me included). My fear is that you could bring in a new manager that doesn't get on with certain key players and sells off half the team. Then we are back to square one. What Ole has achieved in stabilizing the club could be undone so fast by a 'genius' manager having a tantrum.
I don't think, you will find many people on the forum who wouldn't agree with you that such a move ("sells off half the team") must be avoided at all costs. We have a structure in place now, who is supposed to provide some continuity and limits to the actual manager. Also, things like that become less likely if you do a proper scouting and make sure, that you only go for managers, who are known to have playstyles that would fit the current personal.
Not looking for manager alternatives just because of fear isn't a very rational thing to do. I think, the overwhelming majority isn't pushing for "Bring in somebody else no matter who" but for "please monitor the market to be able to act in case of need". That's also why some (including me) try to remain (in my personal view) less biased when praising the manager.
If we win the title then it would only be because he needed world class players in every position to do it, and because every other club had a poor season. Look at last seasons 2nd for proof of that - zero credit given.
Fans are demanding a 'serious title challenge' this year, which seems to mean within 1 to 4 points of the winners, but if that is achieved the narrative will be twisted so that Ole and the team choked or bottled another chance of a trophy.
I think, the overwhelming majority of critics on that forum does give Ole a lot of credit but not as much as some of his "more enthusiastic" supporters so there will always be a conflict while the sweetspot lies somewhere in between.
And this "Back to the Future"-Argumentation is a little weird, I mean how is anybody able to know what will happen and in what fashion?! These things can always be turned to the exact opposite position while staying more or less valid. Say we get season long injuries to Bruno and Maguire, I am sure, quite a big chunk of people will instantly reduce their season expectation because of that, while still arguing that this would be different to what for example happened to Liverpool last year.
Some of the criticism is over the top. Some is just not worth talking about. But these are extreme positions and like in most contexts, there is nothing to gain fighting these extreme positions. It was like this from the beginning - and all this criticism doesn't seem to phase Ole, so maybe the fanbase can learn to deal with that kind of stuff as well. As long as there is some sort of success, there won't be any riots or something. I've read it on here as well: sometimes the most active supporters or critics aren't even fueled by events on the pitch or next to it, but by other posters and arguments.
Lets just accept that we all are a bunch of clueless people trying to create some sense out of incomplete information and multi-complex things happening on a football pitch. With some people, it will lead to creating online accounts with "Ole" in the username, with some people it will lead to being ready to throw away yearlong achievements just for a little trophy.
Next level stuff