I think you need a more straight-forward and simple documentation if you intend to attract a wide audience. There is no real guide to getting started, and that's a bigger selling point for me than anything. I would have to try it out myself before I render an actual opinion, but so far it sounds good. I'm a big fan of Pelican (http://getpelican.com/), which is documented really well. so I might just be a little biased.
TEZOS WEB SITE WWW.TEZOS.CH HAS BEEN GENERATED WITH http://getpelican.com/
You can find this string in their index.html file
<p> Powered by <a href="javascript:if(confirm('http://getpelican.com/
Then, if you look what http://getpelican.com/ is, you can quickly realize that Pelican Static Site Generator, Powered by Python Oh, man. This is why this site was never updated since September 30, 2017. They did not bother themselves to write even a normal web site for their project, despite their project valued $1bn A bunch of french teenagers IMHO
If security is your most important thing, you (virtually) need a static CMS. That also covers your "static pages", "fast" et al; however, among the static CMSs there are very few with multi-user support and/or an online content editor.
If you can live with managing multiple users by granting them SSH access, probably Pelican is worth a try which also uses jinja2 for its templates.
Otherwise, a full-blown solution like Kirby could be interesting for you.
I'm with afoo42. There are some really good static site generators out there that make life a lot easier. Django is extreme overkill for static sites.
We've used Jekyll in the past, but I'd like to try Pelican. The nice part for Django developers here is that the template syntax is very similar.