The article itself certainly offers sound advice. I can imagine how distracting a full blown launch can be when there's a business to build and a product to refine.
Thing is, after clicking through to the author's new project, Origami[1], the same big launch mentality seems to still be at play. I'm met with a mysterious sign up page hinting at the product, but there's no way to be sure if I'm genuinely interested. I submitted my email just to see if I could get my hands on the product, putting my trust into the "early access now" message underneath the email field. The resulting email just kept me at arm's length and I still know nothing about the product.
I suppose that's the way it's meant to be, though, given that Origami "has a thriving community of families in the hundreds already".