Maybe they got so much money and properties that they don't have to work anymore?
Yeah right, common!
If money would have been a problem or a restriction they would have quit when their son was able to buy tens of millions of properties overnight, but no, they would have continued to do so till retirement, and even after that they would probably still take part in private courses or get paid for appearances. It was Stanford who told them to pack and leave, you really can't have the parents of a guy accused of money laundering, conspiracy to commit fraud, and many others teaching students about law, both the university and the course would have been the laughing stock of the entire world.
I think that the real reason for this is they're too busy making a line of defense for their son and possibly for themselves.
If they have enough connections in the real world in both politics and law probably they know that SBF must take all the blame here, he will go to court and he will keep his mouth shut and keep things simple, he did a booboo and the money are gone, jail! Every scheme that would try to shift the blame or diminish it might raise questions on who got the money and that's not something his own side wants the public to find out.
Probably they know already the whole thing is undefendable at this point, so better keep quiet and let the public outrage die down without provoking it with any statement or move.
Kevin O'Leary got $15 million from FTX to promote the scam
Which he said was lost with the collapse, so if this guy will keep on babbling he will dig at least one hole, it's either for himself or a deeper one for SBF.