That's assuming 100% of everything you earn is saved. Cost of living is high in Seattle. You're also in a higher tax bracket. How much of that income will you actually be saving?
If prices remain fixed, after ten years, you have about 25% equity in your home (not including the down payment, which makes it closer to 40-50%). Assuming the housing market keeps going up, then maybe you'll be a millionaire by this point with just your home equity.
But this assumes you aren't renting. You first have to put up $200k liquid for the down payment. New hires won't have this right away, and the housing market will keep getting more expensive in a world where "home equity makes you a millionaire".
I'd still wager that only the most frugal will become millionaires within ten years.
Amazon isn't some magical entity making it happen either. You could attempt this strategy with any engineering job in Seattle.