I read through one of his emails. This guy is great at communicating his interest and signaling himself as a "high performer".
Perhaps, he is also genuinely good at cracking these interviews. No wonder, he's been through so many of them.
Interviewing really is a distinct skill from contributing and the more people crank it the more it seems to test for interview ability.
this email? https://x.com/var_epsilon/status/1940492841232584745