It's because Lex Friedman and Andrew Huberman now create these 2 - 3 hour episodes that there's no time to listen to anything else anymore.
He throws in extremely open ended questions. And the guests can answer any way they like.
I like the freedom Lex offers his guests, as opposed to traditional media interviewers. Lex does open ended questions and the guest can answer it anyway they like- any depth they are comfortable at speaking.
Traditional media is not only narrow in scopes but questions, and hence, answers are bound by the intelligence level of the host and the audience.
He snags many big names and interesting topics ... and utterly mangles the result.
I'm boggled that he is as frequently recommended as he is, particularly on HN.