What does any of that (besides maybe that vague "that hook") have to do - specifically - with imposing a physical advantage over a defense?
The main point I took from it was that Gobert needs to be able to make a team pay on O and prevent a small lineup. A post up game is not the only way to do that. He has another physical advantage, his height and length.
If he developed what I stated the opposing team would need to play a bigger player on him.
Yes the hands part is about catching the ball, and maintaining posession, as he cuts to the basket off a pick and is in traffic.
The "taht hook" (eh, it happens) is simply the hook shot he started using as the season wore on.
The three things I listed come from his current game or areas he shows promise in. It is not changing that much about him really. He is already developing a hook shot, he often loses the ball once he has it in traffic due to being stripped and his FT% and height give me hope that he can have a decent FG% within 10 feet.