I think Ole in/out discussions have become clouded by a larger philosophical battle within the United fanbase, as a result of which people often end up arguing about much more than just Ole's performance. Hear me out.
Part of the club's fanbase want nothing more than for Ole to succeed and manager Utd for the next 20 yrs. They're willing to ride the occasional bump (Sevilla, Villareal, Young Boys) because Ole is undoubtedly making progress and has improved the squad. They know that Ole's eventual success will not just be satisfying from a trophy haul perspective, it will extend SAF's legacy (one of his students successfully took up the mantle), prove the "United Way" is more than a vague unrealizable hope, and indelibly mark Man Utd as a unique club. For these fans, patience in Ole will be rewarded by a rebirth of United's soul, and act as a beacon to other clubs that want to be successful whilst sticking to their heritage and principles.
On the other hand is a group that consider highly regarded technicians managing for brief tenures as the next evolution of top-tier football. These fans see elite proven managers competing for top 4, they see Tuchel winning the CL in half a season with zero spend and ask "why not United?"; they sense the window is already closing on our potential title-winning squad (Ronaldo, Cavani, Pogba could all be gone in a year) and our bid to permanently reclaim elite status. They read arguments like "Ole is doing it like Fergie did", and wonder why some fans are stuck in the past. And if Ole does leave, who's to say the next manager won't be afforded too much time, pushing us even farther behind the leading pack? To these fans, harking back to Utd's past as a validation of our current process is to ignore the march of time and a future in which United could be rendered irrelevant. Taking this perspective to its logical end, SAF, despite carrying Man Utd to the peak of club football, could indirectly result in the club's eventual undoing.
It's impossible to discuss our current managerial and coaching situation without first understanding where one lies on the above spectrum, because one's perspective heavily informs the set of appropriate corrective measures. I expect this war over Utd's ethos to divide the fanbase further, and to lead to even stronger disagreements about Ole's future.