It's too early to judge Foster and I am not doing so here. He will need this season and next to show us what he can do or can't do. NIL will calibrate that as the HC isn't as important as NIL these days.
But a signal has appeared. The personal fouls are a signal that this team is not listening to him. They pay no heed to his D in his DRE confection of self help showmanship. So, we really now have RE because the D was erased. The lack of discipline is what marked the Mora teams who were consistently among the most penalized in the country.
There's a lot left to learn about Foster and his ability to run a program, but this is a poor reflection on him. It's a bad omen for his future here.