Yup. I think one of KO's problems is that, at times, he coaches too much like it's an NBA game and not quite enough like it's a college game.
That said, we won in 2014 playing 4-out. So if you've got the pieces to do it, it can & will work.
Actually, that's one aspect of KO's style I appreciate -- the willingness to go with our best personnel in a small lineup. We won a championship in 2014 not just playing 4-out, but 5-out, like Golden State's lineup with Draymond Green at the 5. (Look through the highlights and see how few of them involve a traditional big man -- most of our success came with Daniels at the 4 and Giffey at the 5.)
The opposite was one of the problems I had with Calhoun late in his tenure. He was so stubborn and obsessed with size he would trot out these immobile, under-skilled, over-sized lineups that couldn't do anything on offense. Seriously, watch the Iowa State game in 2012, if you can stomach it, where we started Roscoe at the 3, Oriakhi at the 4, and Drummond at the 5, and predictably it was a disaster.
When you have big men with skill, you can play a traditional PF alongside a traditional center (e.g. Okafor and Boone, Adrien and Thabeet). But KO has learned not to force that square peg into a round hole when the bigs aren't good enough.