Yikes, if the coach of my favorite team ever said that I would be pissed. It's not like Texas alumni are ubiquitous in the NBA. Durant and Aldridge are the only two that I can think of that are All Star level.
I would be be pissed to if Painter said that. But to your point NDUM Texas also has T.J. Ford, D.J Augustin, A.J.Abrahms, Daniel Gibson thats a pretty good list. Also on there roster right now there are a handful of NBA players like Bradley, Hamliton, James, and Pittman. That is a pretty good list. Anyway I still would be pissed off if I was a Texas fan I would what a National Championship.