Brendan can do whatever he wants. Hes that good. If anybody seriously needed to interview him 20+ times to figure it out, then the burden is now on them to not fuck it up.
The article says "I ended up having 26 interviews and meetings (of course I kept a log) with various AI tech giants."
I don't think that indicates that any one company interviewed him 20+ times.
Seriously. I would expect him to be more of an offer-only scenario.
He's summing interviews across all AI giants. But the ones about to IPO can interview someone almost infinitely many times, because everyone wants on the bandwagon.