Glad you are finally coming around the idea that coaching is major issue for this team
TD21 
. I mean I agree with you, that in this league, when all things are more or less equal, talent (elite one) carries the day irrespective of the coaching variable. But at the developmental/formative level it still matters. I would even argue they've failed to unlock Wemby as much as they should in his sop re season.
They story of this so-called improvement this season was the product of Wembanyama going on a torrid 7-week run-- from the first week of Nov until the second Denver game-- playing at essentially Top 5 level (all relevant adv metrics bore that out.. EPM, BPM etc..) and Paul proving he still has something left in the tank to floor-raise an offense to respectability. The moment both dropped off; the team cratered in their wake.
In a way, we really lucked out with the timing of Wembanyama’s diagnosis having already secured Fox, gotten ENOUGH of a look at the supposed original young core (Johnson, Vassell, Sochan), and seen the inadequacy of the crew/committee subbing in for Pop in what was trending somewhat like a 'lost season'. It would have been two if a laboring Wembanyama fell down with the DVT during Euro Basket or in a futile attempt to chase the play-in in mid April..