So many bad arguments going on here.
First, the $250k figure would not be gross. It would be Adjusted gross. Keep in mind that interest on your student loans and interest on your obscene mortgages are not included.
Now more importantly, there are a number of posters arguing that you can make $250,000 per year with no assets. While that's true for a lottery winner, almost anyone with a salary of $250,000 or more per year will have a very significant asset: an education. "Oh but it's not an asset because it's not tradable." Bullshit. It's economically the same as an annuity.
Assuming your job is worth $250,000 per year including bonuses, and you expect a 3% raise per year, just offsetting inflation, and you expect to work for 20 more years, the riskless scenario would indicate that your job is worth $5,000,000 in current dollars. There's a risk that you'll lose your job, sure. But annuities and bonds also have a risk of default. From an economic standpoint, your salary is an illiquid amortized asset.
If you get laid off from your cushy job, you are NOT in the same situation as a librarian making $40k per year that also gets laid off. You have an additional asset to trade that the librarian hasn't, EXPERIENCE.
A suggestion to posters making Econ 101 arguments: enroll in Econ 102 as soon as possible.