Yeah, I don't see the point of this article: Markdown has already won.

I have some clients where I will send docs in MS Word/PDF format, but that kind of proves the point: the recipient sets the format. They may not explicitly say anything, but I'm not going to send something if there's a risk of receiving a "how do I open this?"

Also, code blocks are the worst example of it's limitations: just use backticks. Sometimes I want to have a big table or diagram and find that Markdown (/Obsidian) doesn't quite scratch my itch, but then there's always HTML...