I wrote up a few of my own thoughts[0] on moving away from writing markdown to writing HTML directly. At this point I have a small bit of code to wrap things into an <article> tag include a <header>, <footer> with links to a home page and include some boilerplate like <meta> tags. I don't think I've sacrificed anything in terms of best practices and actually gained a few things in writing more semantic HTML which I think aid in assistive technologies[1]. I actually hope people will "view page source" on my pages anymore -- a big part of getting to where I am has been testing against alternative browsers like eww and w3m.
[0]: https://idle.nprescott.com/2020/why-bother-with-markdown.htm...
[1]: https://sourcehut.org/blog/2020-05-27-accessibility-through-...