I believe John is writing for an audience that PG is not addressing. He is taking his lifestyle business approach and saying that it should apply to businesses that are seeking funding and trying to ultimately have an exit, or become a shiny unicorn. This just isn't the right advice for YC style companies.
I think there's a lot of overlap in the two audiences though. Someone who doesn't want a corporate job might say "I should start a startup." Maybe in their head they're thinking a one-man shop, but then they google about startups and read PG's essays about these larger efforts involving fundraising and such, and get deterred from their original (quite do-able) plan.
This article is saying to those people: "Nevermind what you hear, go back to thinking you can do it on your own, because you can. I'm here as proof."
You're right though, for the people who are squarely in the YC/fundraising camp, this article is not speaking to them.
