How is that different than any other static website generator that started way back with Blosxom and has now grown to a dozens of different generators?
Github pages is also really simple to use, unless you have problems with git.
Github pages is also really simple to use, unless you have problems with git.
But if you use Dropbox, there are several apps that were made specifically to write posts and content in Markdown. When you tap into the Dropbox ecosystem, you gain a lot in ease of use.