... goes on to name one tool (pandoc) that parses Org-Mode (and also parses Markdown. I would in fact guess pandoc is used much more often for the latter than the former).
> Org-Mode Has Excellent Tool Support
> this is not an article about Emacs
... goes on to describe the "tool support" in Emacs. Sorry, but the paragraph title here really implies we're going to be talking about a range of tools, not just Emacs.
And then to conclude:
> With this blog article I wanted to point out the usefulness of Org-mode even when you are not using Emacs as an writing tool.
Can anyone point me to where exactly in the article the author has done this?
Org-Mode is great if you use Emacs. Try installing the Org-Mode addon in your non-Emacs IDE of choice, and you'll hit the same "partially implemented/not-yet-supported/etc." issues you would using an obscure markdown parser. In this regard, Markdown is much more "standardised" than Org-Mode—a standard exists for both, but the level of adherance to that standard in terms of the total number of parsers out there is undoubtedly higher for Markdown.