Earlier quoted context omitted.
I read the whole article, including the "why not to get a PhD part." I still thought it was way too kind to the "get a PhD" side of the equation. PhDs represent a tremendous opportunity cost, and I have not seen good evidence that they causally improve outcomes in the vast majority of cases.
How are you measuring outcomes? Just salary? Because how would you empirically measure anything else?
And don’t forget to factor in the opportunity cost of accruing student loan debt (which can’t be defaulted!) against lost yearly income.