I'm sure the luminaries at OpenAI have encountered paying AMT from previous dealings in the startup world. Sama's estimated net worth is north of $500 million, and the rest of the employees aren't poor either. Gdb was an early employee at Stripe.
Oh, man. It was a joke conflating the two common meanings of AGI - Artificial General Intelligence and Adjusted Gross Income. It clearly didn't land. Like the SpaceX Starship test! LOL! No? I'll be here all week. Unfortunately.