How is it more convenient to add lines under a title than start with a # ?
How is it better to limit to h1 and h2 only?
For me, the use of indentation over ``` for code blocks is a complete non-starter, though. It's hostile to copy-and-paste.
Maybe I am spoiled but I rarely read markdown directly. As a user of vscode I do ctrl + shift + v on a markdown file and read the rendered version.