Ole's coaching team is very inexperienced and most come from within the same circle (ie either United or Molde or both). That, United's lack of plan B and our reluctance in using subs doesn't suggest a wealth of new ideas coming through.
Our defence is indeed weak. It lacks leadership, our CBs are painfully slow and its prone to individual errors. Ole spent over 145m in that defence and yet we've conceded more goals then Leicester, West Ham and Arsenal. That despite playing with two enforcers in CM.
Ole need to get credit about his superb man management skills. For the first time since Sir Alex the manager was able to make painful changes (whether they are right or not doesn't matter) without losing the dressing room. However there are certain aspects of his game that are simply not good enough. His tactics and coaching are basic, he relies too much on individual talent to basically bail him out, he seem lacking a Plan B and many players had dipped in form after previously doing so well (Greenwood, Martial, James etc). I also don't buy this squad building BS tbh either. We've got a forward line problem because the coaching staff had failed to identify Lukaku's physical problem and came out with tactics that suits the player like Conte did. We also threw 80m on a CB that needs an 80m CB partner to do well.
Again, I disagree with several of these points.
Maguire was very good at leicester, he didn't need an £80m CB to assist him there, just Wes Morgan!
The issues in defence are generally to do with indivual mistakes, which points to a concentration issue. The way AWB for example jogs back into position rather than track back early with urgency is a major issue, the switching off at corners/set pieces is an issue. Its an issue all round the team however. I'd say this is more to do with the preperation before games rather than a deeper coaching issue.
Ole has repeatedly changed tactics and shape throughout his tenure at United, although I'll compromise and say that this season he has been too stubborn with using the same formation and players too often.
I don't see an issue with indivual talent winning us games - thats the reason we buy these players, how often does Vardy, KDB, Aguero, Salah, Giroud, Kane etc come up with a moment of quality which wins the game?
Also, this fallacy that we play with two holding midfielders/enforcers has to die. We don't! If people analysed the games they would see Fred and McT's average positions are not that of holding midfielders, and this is part of the issue.
We play very very high, the game at Chelsea is a good example, two very even teams. Both Fred and McT's heatmap show that they played alot in Chelseas half, and not in postions of a typical holding midfielder, or 'enforcer'.
This is part of Ole's gameplan - to maintain control of the game, push the opposition back, which is exactly what we would want from a United manager, it's just a shame that unfortaunately Fred just isn't quite up to the grade, and we are relying on players like Martial for movement.
Ole is beyond criticism, he has to improve and as you say, become more adaptable throughout games like he was last season, however he has definitely shown signs of progress this season.