I had not seen it. This comment just linked me too it. https://news.ycombinator.com/item?id=33809968

Unfortunately in my opinion he is not a trustworthy source at all. He lies in that same interview. His own PAC is left. His mom helped found and run another left super PAC.

Seems like the family heavily supports one side. I think he has plenty of reason to lie to help out that side.

He should have receipts for those donations or at least evidence of them happening. That would at least give some credence to his claim.