Pop's coaching is fine, maybe even great this year.
For these numbers, I'm dividing minutes played by total games the spurs have played to get MPaG. Aldridge leads the spurs with 32 MPaG. Next is Mills at 24, with his well documented lack of production, followed by Anderson and Gasol. Compare that to the Warriors (the real competition, considering the 3rd place context of our griping), who have 4 allstars over 24 MPaG.
The issue with comparing to the Warriors is that they have a bunch of blowouts to get their relatively balanced numbers, whereas the Spurs have had to put their best lineups on the floor all year, yet after the top 4 the distribution looks pretty similar.
Forbes is 6th. Murray, our starting point guard, is 2 minutes back at 7th. Our second all star is 14th at 3.6 minutes, behind such luminaries as Joffrey Lauvergne (who actually had a great game yesterday) and Brandon Paul.
And this isn't consistent. Because of all the missed games, the minutes come in bunches. 6 players average 20+ MPaG, but 10 average 20+ MPG. That reiterates that it's not just Pop tweaking the starting lineup around two major injuries, it's guys playing 1-2 minutes for a while and then suddenly getting 30 minutes for long stretches of the season because there's no one else.