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.
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.
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.