The article is largely right on the limbo that the Spurs are stuck in with a lot of talented young players who are mostly complementary pieces with none looking like breaking out into a star. That is, to an extent, a fair point. What Tjarks gets wrong though is that these youngins' have actually developed quite well from where they came from and the point of entry into the NBA. The least developed one is Lonnie Walker who seems to have many tools but hasn't put it all together, is inconsistent and has been poor on defense.
Murray and White on the other hand have developed really well. Murray isn't still a consistent shooter, but he has become much better at mid-range, decent at finishing and very good at playmaking by especially cutting his turnover rate a lot. His ACL injury hasn't been that huge a setback except possibly it held him back a little on defense. He is still a A- defender overall and one of the best in his position.
White, if not for his injuries, could have threatened an All Star spot last season considering how good he was in the Bubble. He was working his way into shape and becoming a very good contributor for a Spurs team that threatened to make the playoffs before COVID19 hit and he injured his ankle. Plain bad luck for a really good two-way player who can defend 1-3 both in the paint and in the perimeter and most importantly adds value as a shot blocker as well. He has good playmaking skills and his shot has been improving every season. White can still threaten to be at least an All Star reserve if he recovers quickly from his injury.
Keldon is all heart and productivity for a small ball 4 and as a small forward and has a long way to go to be more productive and efficient from the perimeter, but he has willed himself to be a starter quickly in his career and his arc only points upwards.
Poeltl is more than a journeyman center. Ask Timvp who grossly underestimated his worth and use. He was very good on defense last year.. possibly the second best defensive center behind Rudy Gobert and despite being only a roll man/ finisher, he was right up there in efficiency. The free throw efficiency or the lack of it was a bogey, but he corrected it quite well in late season.
Yes, the Spurs are one All NBA player/ two All Stars from contention but they can get one of them from within - White, I would bet on .. and Murray could be a borderline All Star sometime too. If they can develop Keldon, Vassel and Primo well in the next two years and draft well again next year/ strike rich in free agency/ trade by getting that elusive all-Star/ All-NBA player.. They will be back in the hunt. Its not a bleak future at all.