I think the general consensus is that you need at least 2 NBA guys on the floor to be a FF or NC team. Sure, there are exceptions, but in general, you need at least a couple of guys to be that level of talent. And Purdue had that last year, including a Top 5 pick.
So, did Painter not utilize his talent properly in the tourney? Was he out coached? Fail to adjust?
Wrong. You need a lottery, or near lottery-pick guard/wing to win a NC. That's not consensus, that's fact over the last 20 or so years.
Having a top 5 pick doesn't guarantee that spot... good Lord. Markelle Fultz was picked #1 overall and didn't even make the NCAAT, how many UK/Duke guys go in the lottery and they don't make the FF?
I would say stop being dense... but...