Sure, but there's something about just logging in via SSH to a server and sending your post in one command. GH pages is easy to set up, but it's not 'hey it's all done for me' easy.
No matter what you do, GH pages requires more complexity and setup. And that's not a bad thing in this case, it gives you flexibility, but I can see a lot of people preferring prose.sh simply because they don't care about making a website, they just want a blog.
Very neat, from a technical perspective. I hope you don't have business aspirations, since from a business point of view, key creation may throw off 99% of potential user volume, so this limits your audience and growth.
Out of curiosity, was this developed as an exercise in procrastination while preparing for a pharmacology exam?
I’m not the creator, so maybe this response was on the wrong comment?
(I don’t think key creation throws off adoption by developers, who are clearly the target audience. I just didn’t understand which subset of developers was being targeted.)
There's blogger, and wordpress(.com), and a lot more, but I (and presumably you and OP) would take anything over those types of platforms.
This fills the gap between 'do your own thing' and 'just use wordpress'.