Well, if you could be earning $150k at any other company, and you are only paying yourself $50k at yours, then you should be earning an additional $100k/year worth of shares over time to dilute the investors. You are investing that missing $100k.
And you're missing the main point that many of these founders simply aren't getting paid at all, because they think it is unethical to do so with someone else's money. The original article is exacerbating this problem.
This is a bit naive. I can sympathize but it's just not how things work. Nobody is forcing you to start a company and the equity you're building and convinced investors buy into should be your main focus. That being said, I do believe in founders paying themselves a liveable salary.
If you raised a $30million round, then it is.