A charitable (and, I think, reasonable) reading would be that the poster used FAANG as a representation of the overall trend in tech. FAANG are what the rest of the industry aspires to be, after all.
How many CS jobs are even in the "the industry" though? Home Depot, Walmart, and Nestle are examples of massive companies that do not aspire to be Facebook or anything like it, but who hire lots of software engineers. Most companies are not tech companies, although a handful of tech giants have done very well.
What's "tech?" Large VC funded B2C companies get a lot of press and are most well known but I'd imagine most software engineering jobs are either at "non-tech" companies or companies that provide B2B services.
