Of course it's not ok. At some level getting rich is a life-or-death issue. How do I get enough money to retire? How can I possibly afford health-care? What if I or my lovely wife get cancer? The reality is, the later years of your life are going to be significantly more secure and happier if you make a lot of money.
Don't be silly. She wrote that her friend, "could easily bring in a low six-figure income" If you save wisely, you can retire just fine after a career at a tech company making 2-3x the US median salary. And most companies have good health coverage for the cancer. She is talking about the pressure to make $10M or more through a startup, not getting the money to retire comfortably.
Well... kinda. One of the dirty little secrets of employer-provided group health care is that when you have one person whose health care costs vastly exceed the average, there's enormous pressure to get that person out of the "group". I've know companies where someone got cancer and the premiums for the whole company doubled the next year.