This paragraph intrigues me: why should anyone who doesn't believe that an organization can build a winning team around a player with Top-10 talent believe that the same organization will do any better building a winning team without one?
Well as I said it's all about probability. They have a clean slate building a winning team from scratch. They have 7 years of losing with DeMarcus. That's 7 years of ineptitude that you're counting on to magically turn into a winning team. If I need to place my faith somewhere it's going to the unknown rather than the known failure. Again, it's also about the situation, where I don't see a feasible way for the team to improve enough when we are winning around 35-40 wins a season. I was personally less inclined to trade Cousins once there was a higher likelihood that we would/could extend him, as that would buy us more time.
But beyond a simple matter of proven vs unproven, I am more inclined to believe that this FO will hopefully mess around less if they finally get to play the style that Vivek dreams of. We were never going to be a team that played the way the owner wanted with Cousins. That sucks, but it is what it is. As I've said, I also think it's just easier to win in today's league when your star is a guard rather than a big man with ref issues. Put it this way, the FO clearly didn't want to build around Cousins, so rather than extending him, having two more years of 8th seed appearances at best and hence lower draft picks, you bite the bullet now and at least have 2-3 years of assets to show for it. I am making a lot of assumptions about FAs and whatnot, but I think they are reasonable assumptions and no less likely than us finding the magic formula to becoming a good team without actually adding any high level talent. Even if Cousins goes on to actually make the playoffs it's not a reflection of what we could have done, because we couldn't have gotten Anthony Davis, or John Wall or whoever it is. At this point KingsfanGER will come in and say "what a lazy excuse, if you can't sign good FAs then your GM must be bad!", to which my response is, yeah, so do you want to fire the GM again or do you consider the hand that you're dealt and try to play your cards as best as you can?
We now have to turn our hopes to the draft. We have drafted some gems before, so we just have to hope that we will do so again. As Baja says, most of the top players were drafted, so we shouldn't be looking down on it. We've drafted Cousins, Tyreke, IT, Whiteside, and could have drafted Klay, Kawhi etc. Could have, as in we mechanically, feasibly could have done so, but simply chose not to (much to the FO's discredit). Meanwhile, what has free agency brought us?