I've been giving static site generators a go, specifically Hugo. Webdevs have always treated static sites as unserious, but there's plenty of sites out there where it'd be ideal. An awful lot of those sites are currently on WordPress.
Does your local mechanics shop need a dynamic site? No. Local restaurant that points you to an external site for online ordering? No. Little gift shop selling locally produced goods? If they don't intend to sell online, then no. A manufacturer with product pages that have a "where to buy" button that sends you to their sales partner in your country? Nope.
How many CPU cycles are wasted on these sites that could be nothing more than reading a file and streaming it back to the client?