That's what I experienced building a static site generator for my dad. You would just dump markdown into a dropbox folder. A cron job would poll from dropbox and generate the website. But even markdown is too daunting for a non-techie. Non-technical users are probably not used to write "code"/"mark-up" and have a good grasp at what's coming out on the other side. The visual aspect, a sort of preview, is missing. There are a lot of options to preview markdown. That's just another hurdle, another tool they might have to learn. It's all just so loosely integrated, even I have a hard time putting it together. Might be fun for us to fiddle around, but it isn't if you just want to put your content out there.
I've started to work on an alternative: Desktop app, with a block based editor (text, images, headings nothing more). Shows a local preview of your site. Outputs static assets and/or uploads directly to Vercel for hosting. Few knobs to fiddle around.