You are right. Case and point; Discord - bringing basic markdown to the masses.
Slack and Discord have probably made more people into casual Markdown users who do not even know that they are using Markdown. When I told my wife Obsidian lets her keep notes using Markdown she was not convinced, once she tried her response was 'oh, it is just like one big Slack message window'.
Not only is this probably incorrect; but even if it were the case, then:
- so what?
- doesn't this contradict the title lamenting the popularity of markdown?