> These 2 produce IDENTICAL output. And this is just the tip of the iceberg?
> It has so many poor decisions baked in that if you try to use it it will actively fight against you the moment you think you know what you’re doing.
That misses the point. The point of Markdown is simplicity, not perfection. And that is also the reason why Markdown will prevail.
This also misses the point: multiple syntax markers for the same thing is the opposite of simplicity (though that's not the reason why Markdown will fail)