I'm not sure I'd value his advices at more than entertainment value though, it's half ironic jokes half serious but cynical, and last time I checked he was pushing hard on his quizz product that turns out to be a bit of a ripoff. I wouldn't put my trust in that guy too much.
I'm not sure how great that channel is for in-depth advice. The best case is that he's got a really dry, sarcastic sense of humor. And I think he's currently just running his cs interview prep business on the side after getting fired from Facebook.
https://www.youtube.com/channel/UC4xKdmAXFh4ACyhpiQ_3qBw/vid...
(more seriously, it's mostly just amusing)