The guy is pretty much god-tier in performance engineering -- I'm not seeing the kardashian vibe at all. There's an element of "dear diary" but it reads (to me) as just trying to catalog what he thinks is important to note.

Brendan known to be an exact opposite person by the way.

A quite funny post from his blog on this topic: https://www.brendangregg.com/blog/2021-06-04/an-unbelievable...