Point taken and I agree with the advice. That said, you never know what kind of downturn this will be. 2001 was very different than 2008. The GFC was a credit-driven crash and took a long time to unwind, during which all of the scared money went splashing into tech so despite her narrative, 2008 was not a recession for many people in the tech industry. Developers didn't get hit at all and there was plenty of VC money sloshing around.
The next downturn will (probably, maybe) be a normal run-of-the-mill Fed move based on raising rates to cool off inflation. That probably _will_ affect startups. Still, you never know and it always pays to have a bunch of liquid cash—that's never bad advice.