No I'm not. The team looking more disjointed when missing out on Pogba or Bruno is what led you to believe the system generally doesn't elevate players, I disagree with that. These are playmakers and game-changers. It doesn't tell me anything about the system if they are missing, they are key midfielders. I think the only way you could minimise the impact of quality in midfield without losing out is if you play something like Klopp, where you need workhorses who might be easier to replace but then again they have struggled in gameplay when their important fullbacks have been out injured. It's just the nature of the game, and not a point I would hold against any manager. It's up to the managers to figure it out by getting quality backups that can fill in without not much loss of quality, and if not just minor changes in tactics to make sure we win.
That is why I disagree, because I actually think Ole has proved he can do with less in a pinch. The win against PSG is probably the most noticeable example.
We look disjointed compared to how we look with Pogba and Bruno, but we have not been looking disjointed compared with how we looked under Mourinho. Far from it, and he has gotten many players to shine in the system like Fred, McTominay, Martial, Rashford etc. Players who has had their best ever season under him, even without Pogba and Bruno there.