[encryptluks2]

I disagree... Markdown is no longer a single unified version. There are multiple implementation, extensions, etc. The original Markdown spec by itself isn't that useful and there is a reason so many extensions have been made for it. It can maintain simplicity while still adding new features. Pandoc has some great examples of Markdown extensions that are really useful.

[brospars]

The core features are pretty much universal and used in a lot of apps (chats, forums, git repositories, project management). Custom flavors maybe not rendered correctly at times but this doesn't make documents unreadable

[encryptluks2]

The core features used in a lot of apps include different flavors, like GitHub Markdown and others. The closest thing you have to a unified Markdown is CommonMark and even that is forked for GFM. Yes, headers, bold and italics text, and lists are nice but there is a lot more to take into account when you are trying to supplement docs that other extensions add.

[29athrowaway]

There are dialects of Markdown but they all respect the core features.