Ole is a great guy obviously and a United legend, hard not to like him. He even did that exit interview with MUTV after Watford loss and the sack, just proved how much he cares for the club.
On his time as the manager: December 2018-March 2019 (Paris) was great time to be United fan, it's true we had many easy games in that period but it was refreshing period in terms of positive vibes around the team after Mourinho got sacked. However, already in March results and performances started to look worse (Arsenal, Wolves x2, Watford win). In late March club decided to offer Ole a contract to become permanent manager and I thought back then that they should've waited another 15-30 days as it looked like that honey moon period was ending. Felt like they rushed and thought it was easiest decision they could make to please the fans (Rio Ferdinand was also bit of a clown with that "United are back" comments after PSG), instead of getting a new manager.
2019/20 was basically a poor season until Bruno came in and turned it around, yes our results improved to an extent in December/January even before Bruno but he was the drive behind our 3rd place finish (we also finished 3rd with only 66 points, that amount of points will very rarely get you 3rd place. Also Chelsea had Lampard and Leicester fecked up). So that was a good season only in 2nd part of it and we had easy opposition in top 4 race.
2020/21 was actually strong league season, though again none of the rivals were good, even City who won the league weren't great until January/February. Our undefeated run away from home was impressive, though I don't think it was sustainable making those comebacks all the time as we did and that was always to end at some point. Team basically only played well in 2nd halves (if I remember correctly). For me tactical problems showed in that season. I was pissed off with how we played against Roma in EL semis, both in Manchester and then in Rome. Yeah it was a fun comeback but you just knew that a team looking to be top side can't play that way. Then EL final. If we won that, Ole then deserved another half a year that he got. But when we lost, that's when we could've parted ways. Just like Mourinho stayed 6 months longer than he should've after it was clear in July 2018 that his relationship with board is really bad. You could say perhaps same thing about LvG and his tenure ending 6 months too late.
2021/22 summer we failed to sign a midfielder and that cost him. Wolves outplayed us as we only had Fred as defensive midfielder and it was obvious we'd struggle if we don't sign anyone in that area until the end of August. We turned to Ronaldo as we panicked he'd go to City and I won't deny his return looked dreamy, especially vs Newcastle. Also don't think it was Ronaldo's arrival that cost Ole his job, problems where there. Maybe it accelerated things and made us look worse and lose heavily to Leicester, City, Liverpool, Watford etc. but seems to me like an excuse.
I will watch this Overlap episode as soon as I find time and I appreciate what Ole did both as a player and manager for us, but seems like people are now making his whole tenure look better than it was because of our current problems.
Ole's situation is similar to De Gea's imo. Both still out of job after leaving United. You could say we haven't replaced them properly but that doesn't mean that they should've stayed.