I don't think oscar is a basketball idiot, far from it actually. Now, oscar as a motivator and program "sustainer" is the biggest question.
What I do see is that oscar is a basketball schemer and tactician and a more "traditional" basketball coach. The thing we got used to with Frank a bit is not that he didn't care about those things, but he was a basketball coach with more of a football coach's mentality. Execution and a system were important, but just as important were effort and how physical we played on a game by game basis. (Yes, good/great basketball coaches get their teams to do both) This was clear in how he used his players. oscar is just different. I do think those things are important to him as well, but he's much more about execution and getting guys in the right spots and right now in these OOC pud games he's working as many guys in as he can. He will motivate with playing time a bit (Gip in the first game), but he's much more interested in seeing how guys perform in games and not just practice and that's why he's playing so many guys. The season will see if he has the ability to push buttons and motivate well, but I definitely think the players are learning basketball nuances they probably didn't under Frank. How that works short term (this season) or long term (3 year down the road) we simply cannot know, but its part of having a new coach with a much different philosophy and personality than we got used to in Frank.
Honestly, in some ways I appreciate oscar's approach compared to Frank's, but it doesn't matter if it doesn't work. At the end of the day even with Frank's often maddening approach to coaching basketball, he won games and that's what matters (and should) to fans.