[azangru]

> for a piece that wants to sell something to me.

Does it? My impression from that article was that the author was giving advice, left and right and for free. There is a link to a course, in the header, which the author is selling; but the article is not centered on it.

> And why should I care?

Well, the obvious presupposition is that you are reading an article titled "guide to writing online" because, presumably, you want to learn some tips about writing online. Because, presumably, you think that your writing is somehow lacking. To which the author is saying here, effectively: "don't worry; I too sucked at writing; and now look at me, I am teaching people how to write; if I could do it, so can you." Or something like that.