I'm not going to try to argue with all 3 posts so you'll have to take turns tearing apart my general response
Someone please show me this lineup that Thibs could have gotten to play good enough defense for us not to be a terrible team. Blake/X/Wes/Hill/Kaman is probably our best defensive lineup & it's still flat out horrible & doesn't have nearly enough offensive firepower to hang with anyone.. Pau would have had to get his minutes no matter what because we needed his scoring.. Nick Young did show flashes on defense this season but the guy is 28, it's not like Thibs could turn him into some defensive stopper overnight, & again, he would have had to play big minutes because we needed his scoring.
Thibs is also another coach like D'antoni who has a problem with running his favorite rotations into the ground, so you can safely assume we'd have the same injury problems. I'm not denying that Thibs would have made this team much better defensively, but I absolutely don't think we had the personnel to win with defense this season. I would swap D'antoni for Thibs in a heartbeat, but with this specific roster, I think D'antoni was a better coach than Thibs would have been this season. Our only chance at winning was scoring a ton of points & that just isn't Thibs.