And, again, this is if you're single, i.e. no second income, paying a single-filer's tax rate, and no benefit of cheaper housing by having someone to split the expense with, etc. A partner earning any real amount of money speeds this up dramatically. (Kids do cost money, if you have them, but they don't cost enough money to offset having a second SWE income, even if you pay for extremely expensive daycare, unless you have like five.)
I don't know about you, but having "fuck you" money after a decade in the workforce, or "no, really, fuck you" money after 2 decades is a pretty good deal. It is, in fact, much easier to make this happen working at a FAANG (or comparable) than elsewhere. People like to complain about the cost of living, and yes, those complaints are valid, but working at a FAANG it's entirely possible to save more after taxes and expenses than software engineers in other parts of the country make _before_ taxes; trying to equivocate between those situations is really quite silly. The first is in a dramatically better financial position than the second.