I know y'all want to grasp at whatever you can to rationalize this curse you've convinced yourselves exist, but the fact of the matter is that talent on the whole is concentrated heavily at the top of a draft and elite talent is what separates the fortunes of franchises. You can add all the caveats you want in the world and it won't change that.
To go line by line:
-The Spurs tanked. Everyone knows they tanked. You're now moving the goalposts.
-The Thunder amassed the talent needed to win and then bungled at the goal line with the Harden debacle. I thought my special mention of them made clear that I am aware they didn't win a ring but maybe I needed to spell that out more.
-Ray Allen is who the then Supersonics traded to bottom out.
-The Warriors traded away Monta Ellis for an injured Andrew Bogut who was out for the year after shutting down Steph Curry. They then tanked their asses off which everyone on earth knows. If your point is that tanking (I don't know what else to call it, but) curses franchises, well, it obviously didn't. If you wanna split hairs about how they didn't get good players in the draft, I don't know about that. They got one of the best shooters to ever live from being bad in the lottery, then tanked their asses off for Harrison Barnes who was an integral piece in their run and the emergence of the death lineup that hinged on a hybrid forward (that could play two different positions, and who also went on to score in the high teens on teams less loaded with talent) and a unicorn "big" that was quick and strong enough to guard 5 positions well (who they got with their early 2nd rounder from - you got it - tanking). But if the point is that the Warriors didn't tank most of those years and were just bad because they ran their organization poorly, then I have lost the trail as to what the ultimate point of this discussion is.