This seems to be her thesis, but she doesn't give us much to support it. We don't know exactly their involvement in FTX (were they investors? merely paid for commercials?) and how would a divorce protect assets for Giselle?
It's an interesting legal question whether an advertiser/promoter can be held personally liable in a situation like this. The argument would be that they knew or should have known it was a scam.
A divorce won't protect any of their assets from the claims of creditors. The mistake they made is having her in the ad as well. Since they were both in the ad, all of the assets held by her in her name, him in his name and jointly by the two of them will be subject to claims. Again, a divorce will not help in that regard.