To be fair, we've tried to go for that cultural reset multiple times with LVG, Mourinho and ETH.
But did we? We hired LVG with the idea he would be here max 3 years and in that time transition us to being a possession oriented team ready for the next manager to take over. LVG literally said this in one of his early interviews - he was retired and his wife didn't want him taking another job and whilst he's obviously a confident man and thought he could win things in that time - the plan was to learn from the Moyes mistake and commit to an evolution in terms of how we played, the players we bought and produced. Then whoever was to come in next would be coaching a similar style. We binned him and the style pretty quickly despite, when you look back in hindsight, having next to zero support for the manager in the scouting department and missing a lot of players we thought we could get, which meant we put a long domestically retired manager in control of recruitment.
Jose comes in, everything in those 2 years of LVG is erased, the club accepts they just want to win now and actually aren't that bothered about changing how we play. Mou through to Ole at least had some tactical continuity and a lot of similarities but the club essentially always backed players against Mou and Ole they just took the piss out of when you look at some of the capitulations we suffered under him. We really just treaded water and stopped a huge decline through paying through the nose to stay afloat.
ETH is supposed to be changing things and, to be fair, it does look like he is trying - hence all the issues he is encountering with the problem players. On the pitch the concern is real, there is a distinct lack of a plan but off the pitch, I want to see him taking on all these over paid average players and getting them out of the club. The more player vs ETH headlines we read, the better. Maybe ETH's legacy might actually be the first person to actually succeed in changing the culture despite getting fired and he does seem to be trying to enforce his standards (although if he starts Rashford next game I withdraw that opinion) with how he is treating the bigger names in the squad.
I will also add, with all three managers (LVG, Mou, Ragnick) who took on/called out players, the class of 92 hounded them at almost every turn. I'm not sure they have turned on ETH yet but it is only a matter of time.