Don't really see what the point of the article is. Some entrepreneurs build try to build small/medium, moderately risky businesses, and that's fine. Some try to shoor for the stars, high risk/high return. That's fine too.
It is perfectly fine. However, by saying that 'being an entrepreneur is shitty' Suster makes his audience believe that this is just what it's like to start a business, and you better be prepared for it or leave it altogether. That's wrong, and potentially discouraging to someone who is considering starting a business.
If Suster had written a post about the stress of VC funded startups, I'd have no beef at all.