I think the comment you're replying to says exactly the reverse of what you think it does. 1. Not "... but at least I'm accomplishing something in my life" but

I think the comment you're replying to says exactly the reverse of what you think it does. 1. Not "... but at least I'm accomplishing something in my life" but "... but the busy professionals have an important advantage: the stuff they're frantically doing is valued by other people, so that it gets them more money and more social status". 2. It's the busy professional, not the overworked underpaid poor person, that the comment says has "more opportunity to give himself breathing room to focus".