All good points.
you don't decide when the "right" star, in the right window, for the right price is available. It's pretty rare and they don't necessarily end up in your team.
Is Trae, the "right" star? Who is, I should answer to get back the topic? Trae certainly fits huge needs for this team and what he brings certainly overcome his flaws, speically if you complete the roster with the "right" role players who are easier to find. I mean sure, a Giannis or Tatum would be just fine but you probably won't get that kind of star, and do they actually fit with Wemby as your alpha?
Any potentially accessibe ones will come up with flaws and you have zero guarantee a Luka will be available down the road. And Dallas has been starting to get things going recently (which I didn't necessarily expect). How picky can you be with the stars you NEED to add to your team? Specially when you're SA, Wemby or not. Do you entirely bet on getting your star via the draft, which means another 4-5 years of "developing" before starting to get relevant? What if you don't (and chances are you won't)?
You souldn't take luck or you good star for granted, nor judge your quality as a organisation withtout taking it into consideration. How competent spurs organisation would be considered if they didn't luck into DRob or Duncan? That obviously changes a lot of things on how you're perceived, and that's the same for Pop who didn't look that good when there was suddenly no MVP or HOFer caliber player in their prime and a contending roster around.
Spurs should be careful of not being overconfident or trusting their program too much. Buidling though the draft, that's for a big part building on luck. Where would that franchise and program be if spurs picked 3 or 4 last year? In pretty bad shape. So yeah, maybe don't be too picky or beleive that patience will necessarily will bring you where you'd like to be.