I don't think this checks out, as most of the ideas around here involving him hiding OpenAI internals from the board don't, for this reason: How could he, given who is on the board?
There is no way that sama is the only person in this set of people to have unique information on critical privacy incidents or financials or costs of server operations, because these issues don't originate with him.
If some version of this turned out to be true, I would be seriously confused about ground truth transparency in the company and how the fuck they set the whole thing up, that this was an option. But again, this is why I'd say: Implausible.