if faamng salary is supposedly that high, that's like a shocker, and probably massive hyperbole, unless something bizarre happened over the last 5 years.
that said, total comp could be pretty high like that quite plausibly.
It's not hyperbole, although prior to 2022, getting $400k total compensation as a senior meant working at a handful of companies, even ones like Google and Microsoft weren't paying out that much unless it was through stock appreciation.
S&p dividend indices are 2.54%, utility indexed 2.85%