One of your original claims was this:
> You can leave a job (by choice or otherwise) where you worked for a year and were making "1 million a year" with less than $300k in total compensation.
For the purposes of discussing compensation at FAANG & similar, this is basically untrue. If you work at those companies for a year you'll take home (short of a massive movement in stock price) something approximately resembling what was promised to you. Taxes do not change the equation on this, since vested RSUs are taxed as income (_not_ short-term gains; them being the same rate is irrelevant - they are in fact just reported as income on your W2, without being broken out from your salary, it's literally one number). AMT applies regardless of whether your income is derived from vested RSUs or base salary - if you work at Netflix you're probably getting hit too. I don't see how state income taxes are relevant, since, again, those apply exactly the same way to RSUs as they do to salary.
> Ultimately, any compensation number that rolls all of this up into one number is mostly useless for actually knowing how much money you’ll have in N years
Uh, no? You can straightforwardly project your take-home pay over time; if you want to be really precise you can do it as a probability density function to take into account the potential movement of the stock price over time based on the volatility.
This is all a bit of a distraction from your main point:
> I'm sure some people actually enjoy the full benefits of what they're promised, but I'd be surprised if that's a majority.
Untrue! Obviously, trivially untrue, as demonstrated above.