Yeah, but you can use formatting and/or clearer writing to highlight it. It seems like maybe some of the formatting of the original article (which made the irony more recognizable to an actual first bike buyer) has been lost. For example, the end bit talks about "captions," but now they just appear to be paragraphs that are part of the article. Also, the article mentions screen caps, but these too have gone missing (except the picture at the beginning).
It's a helpful article, but the little bits of irony seem like they'd be more amusing to the kind of person who already knows how to buy a bike. However, based on the comments here I guess that's the kind of person reading this article, so maybe there's no need to better differentiate them from the genuine advice.