Well 3 of the 4 guys you mention were point guards, just scoring point guards, and some of the best ever at that.
Listening to CRP's interview it's clear that he expects the entire team to move, move the ball and run positionless basketball once they cross the mid court line. He said multiple times he expects Oziah to be competent at getting it across half court and then make the first pass after that it's motion offense and no plays. Does that mean he doesn't feel the need for a true PG or does it mean he's adjusting to not having a true starting PG. The biggest concern is is Oziah, or anyone for that matter, going to be able to attack full court pressure.