I do not know much about [name redacted] and the creator but after looking at his resume, I feel he obviously has a very marketable skills and with over 10+ year of experience, I feel one should have enough put away for rough times like this (forgive me if I am missing some context about this specific case, but I think this point applies in general to everyone imho)
I've had my own troubles in the past (and learned from it), where I made unwise investment choices and when some unforeseen circumstances came up, I found myself cash-poor and struggling a bit, even though I was employed at that time.
Here's the wiki from bogleheads [0] that gives a good framework on how to think about investing and what to prioritize. First thing to do if you do not already, when the times are good is to build an emergency fund.
[0] https://www.bogleheads.org/wiki/Prioritizing_investments