So, the whole question has been, how does he figure out how to leave the board with <50% ownership (preferably much less than, even 0%), in a way which passes the legal sniff test so the deal goes through, but which doesn't sacrifice >$75b that neither he nor anyone else has?
This is where the rhetoric and preparing the grounds comes in. You can argue that OA is actually worth <<$150b, maybe even as low as $0, by saying that it has value only because it is going to keep raising enough cash to reach AGI... but the board remaining in charge + the current cap on raising capital + Altman quitting will destroy that raising ability, rendering OA worthless. (Similar to his threat last year to destroy OA by creating a competitor in MS, and MS then immediately cutting off hardware & capital so the rump OA would starve to death.)
Hence, the board should - nay, is required by their legal & moral duties to the nonprofit - to accept much less than $150b, because whatever that deal is, it's more than $0.
This is of course ridiculous and wrong, but it's not so ridiculous that a board of loyalists can't sign off on it, nor that lawyers can't defend it in court in front of a judge who wants to rule in its favor (because judges will tolerate anything in nonprofits short of gross criminality).