Im confused why Python, Postgres, Markdown is 1996 tech? Im really confused by your entire post, actually.
Yet markdown is not essentially different from running sed to render something into html, which I would have totally done if I hadn't also needed some other features like basic math that would have been too tedious in sed
Speaking of HTML, I do my HTML sites all static, with no external scripts or resources! It is so 1994.. or so 2018??