The only way we are going to find out is if and when reinforcements come in and we see what happens on the pitch.I think, and factoring all the reasons you list, that most of us understand it and accept it in general because we are decent at it. There's nothing wrong with being conservative and it has worked, to an extent, when we need to be.
The issue has come when we've had to be slightly more expansive, or when being conservative just hasn't been enough. But it's been an issue that's been here for a good while and has shown no sign of improvement.
The worry for me is, I don't think that's all on the players. A large chunk definitely is, but there's no attacking structure to fall back on, and that to me is a bit of a worry.
Proof of the pudding is in the eating. Otherwise, it's all speculation.
Only time will tell. As I said in an earlier post, I don't think we'll see revolution, more evolution.