Yep. Buckley did his neocon enforcers’ bidding. Sobran died nearly penniless and in very poor health. He never really recovered from his expulsion from polite conservative society and had trouble supporting himself.
A similar fate happened to Sam Francis thanks to D’Souza’s campaign to smear him as a racist. That was back in the ‘90s when Dinesh played a game of charging paleocons with racism in order to ingratiate himself with the MSM. He found out that didn’t help him but it did damage others.
I’ve heard that WFB helped Sobran some financially but considering his own cowardly role in ruining him it doesn’t count for much.