I mean, I can't see how ownership just continues to let this happen. Vlade likely sold them that if he's just able to get his coach and can Joerger, that this core will be able to get to a championship level. From their perspective, the 2018-2019 Kings were a real success: Exciting fast-paced team, Fox/Buddy looking like a top 3 back-court in the league, 12 win improvement from the previous season. Now, Vlade fired that coach, committed 40+ mil to Barnes and Buddy over the next 4 years and the team outside of Fox has regressed in just about every way imaginable.
Fans would be more than willing to accept more rebuilding years if they hired a competent power structure. And it doesn't have to be a crazy long process either; just look at how quickly the 49ers turned themselves back into one of the best teams in the NFL.