The donations involved are from big ticket donors who thought DeSantis a good candidate but soured after the campaign commenced.
It was all a lie. Thomas is a scammer who claimed $50M in donations, but the FEC reports that were filed came to less than $2K, most of which seems to have gone into his pocket. The link about this man is in post #10.
You’d think that someone working for Pres. Trump would do a little research before a response is tossed out into cyberspace. I wonder how much he made off the president’s other campaigns?