We also felt that even if this data WEREN'T entirely generalizable, it would be interesting to a big enough subset of the HN population to merit sharing.
Not sure what "FAANG-adjacent" means but if it just means "top-tier companies" I'm not sure the others are that either. Many of the listed companies I've never heard of, a lot look like overvalued startups which of course would get hit hard by lack of easy money, Coinbase is in crypto.
I find it very hard to believe you can make a generalization to many/most companies with this data, I know for a fact several large Fortune 500 companies (banks for example) are still hiring in huge numbers. JPMorgan for example is hiring >2000 engineers this year, that number exceeds the entirety of your "additional engineers on market because of layoffs." The only companies listed on TrueUp in the Fortune 10 are the tech-first ones so huge employers are missing from the dataset.
Personally I think the title of the blog post is misleading at best and pretty close to clickbait.