It's important to separate two vital issues here.
1. Is this a good player?
2. Was this a good pick?
Let's not slag off on Primo. He really looks like a good prospect and there were a lot of people liking him later in the round. Fact is, there are tons of guards in this year's class and it was hard to differentiate them. He has defensive potential, offensive skills, seems like a great kid, and is extreeeeemely young. I believe the youngest in this class.
Now, the question is whether the team could have pulled more value out of the spot, and that's where we're all rightfully peeved.
But let's not slam this kid for the pick. The Spurs believe in their picks. They do not make trades, generally, the squeeze value, because they are conservative and know what they want. That's irritating, but it is what it is. Consistently they've been drafting well for several years now. But now's for next steps.