I love how not having talent becomes a compliment at times like these.
It's a compliment in the sense that less-talented players have to scratch and claw and use their BBIQ just to survive in the league. Many of the top coaches - in any sport - were not necessarily the best players during their careers.
Phil Jackson had a career average of 7/4 over 12 yrs.
Don Nelson had a pretty decent 14 yr career, mostly with the Celtics, averaging 10 pts on 48% shooting (career high of 15).
Pat Riley played 10 years and averaged 7 pts/per as a career back-up.
Larry Brown played five years in the ABA, averaging 11/7.
Popovich played basketball at the Air Force Academy. Good enough to be invited to the US Olympic team trials, but never played professionally and went directly into coaching.
The best players amongst the all-time winningest coaches were :
2) Jerry Sloan: defensive demon, 14/7/3 average over 11 years.
And...
1) Lenny Wilkins: HOF as a player AND coach. Career avgs of 17/7/5 and a 9-time all-star. He was actually a player/coach for Seattle at one point. Never won a championship as a player, but did get one in 1979 as a coach.
So out of the top 7 NBA coaches (well, I guess I'd have to look up guys like Auerbach, Heinsohn, Fitch, etc. which I'm not going to). But out of the seven I listed, five had non-distinguished or no pro careers. One was a quality starter for a pretty good team. But only one was a HOF'er.