Unfortunately, I still disagree.
Could the Glazers have effect some change? Sure. And they have by all accounts attempted to do so. Do they share some of the blame? Of course. Making the club a publicly traded interest alone was a major mistake that they are still struggling to manage now, beyond their extractive practices.
As I said in my OP, they are bad owners, both for the Rags and for the league.
But the main drivers of the truly breathtaking level of shiteness United now embody are beyond them.
There has been politics being played throughout their tenure, including at the executive level within the club, with dealing and rivalries, many of which they have not been able stop.
And the structure of the club itself is dysfunctional and, in some areas, outright toxic. That was the case before they arrived, and to fix that requires a complete restructuring (and rebuilding). Much of the persistence of those situations has been down the supporter pressures not allowing them to actually take steps toward that.
All of that in mind, I have to reiterate my overarching point: new owners are not going to get United back to anywhere near their level when Ferguson was in charge, not in the near term, anyway.
The club needs to be razed to the foundations and rebuilt. And the fans will never allow that.
And Ferguson should carry much of the blame for all of this, as well, as his caring more about his legacy than succession planning planted the seed for the immense dysfunction to come (and his management style had already created a morass in his final years).
TL;DR
New owners will not save United.