People have been talking from the pov of football, but I just want to mention a more subconscious side that has seen Ole so nonchalantly disrespected by the fans and the media and his contributions under-appreciated. Everyone can see Ole is slightly in the introvert spectrum from his shy demeanor in his press conferences and interviews (not sure if it's him or that because English is not his first language). I have seen many examples of that in the workplace whether it be business or academia. People under these sort of characters have more respect for them, but people superior or people from outside looking in always have the feeling (consciously or subconsciously) they can bully them. I have seen United fans here call him a "clown", "puppet", "norwegian level manager", "incompetent" etc etc. I have seen the pundits/journos call him "weak", "has no control", "sacked before christmas" etc. Do these people have any clue what's going on in the dressing room, what's going on in the training or even how much control he has on transfers? No. I can guarantee you, if Ole spoke with the arrogance and confidence of lets say Jose but with the same results and performance as Ole, he won't be getting this level of disrespect in both the fanbase and the media.
Let's just take Lampard for an example considering both Ole and Lampard are around the same level right now. Lampard always looks very confident and well-spoken in the media. And now let's look at his results and performance in three games. Ole has the 3rd best xG and the best xGA in the league i.e 3rd most chances created and the least number of chances created against us. Whereas Lampard has 9-10th best xG and XGA (
https://understat.com/league/EPL ). So I was quite shocked to hear the same pundits/journos and people here that is disrespecting Ole, now calling Lampard "will be great for Chelsea", "I like Lampard as a manager", etc after a close win against Norwich.
So, I think Ole public-facing shy demeanor plays some part in the level of disrespect he seems to be getting everywhere whether it be consciously or subconciously.