I love Armin's work, especially Flask, but this seems like lot of other products out there. I have no incentive to switch to this from the generator I'm already using, and for non-techy people I think it's still a big jump in terms of just opening up a tumblr blog.
> for non-techy people I think it's still a big jump in terms of just opening up a tumblr blog
True, but that's not the audience anyways. The idea is that if you (as a web developer) want to make a portfolio site for a customer you could use lektor instead of wordpress or something like this. I generally always prefer static website generators for my own work but I cannot give it to a non technical person to fill with content. That's what motivated it.
But nobody needs to switch for anything. It's just another tool in the shed :)
A related idea on my mind lately is using Tumblr just as a backend CMS. Then pull the content via their API to display to end users on a separate site. For example, with a bot that automates publishing to a gh-pages branch.
The motivation is that their editing tools and app are so nice, but their presentation makes a site feel less professional. (Also because of the limited abilities to tweak CSS, use JS, and optimize performance can be a bit frustrating.)
I don't use a static file "CMS", but I use my own generator[1] which I made because I wanted something really fast. If you want a flat file cms, then a Google search will throw a lot of them. Kirby is the most popular, IMO. But it's not FLOSS. PicoCMS ticks all those boxes though.
I wanted a "full" CMS and a GUI, and it looks like finally I got one now. I hadn't seen another static generator that had a GUI of any kind (that seemed to be supported.)