A lot of people who though they were "comfortably rich" in the last couple of years are having a bad wake-up call that their loan interest or income was not as predictably favourable as they imagined.
This is probably not the same thing as "being squeezed".
That is what is known as a "mistake". It happens and one day it could happen to you, so don't laugh at the people going through it. None of us should be smug about it or do the "don't invest money you don't have" etc.
What I take offense to in this article is the passive voice around it where "they get squeezed" instead of "I lost money".
The same applies if you took a margin call in the last 6 months after borrowing against $AMZN and buying BTC with it. Does it suck, YES. Worse, you could owe the IRS money for the margin call sale.
All of that said, there was a specific video that this guy reminded me of from "How Money Works".
https://www.youtube.com/watch?v=_INmFnlp-hU
It specifically called out "Own a bunch of properties" as a "Buying yourself a new job", rather than being comfortable.