From someone who codes for pleasure: there are simpler frameworks (my favorite is Quasar and Vue - I needed an afternoon to learn that coming with a crude HTML/CSS/JS basic knowledge)

if you need a static site, there are a thousand generators out there much easier to use than React+nextjs. Some of these are easy enough that a non-developer can use and update.

Using code to generate static sites is not new or particularly interesting. We have been caching PHP and Perl sites so that they are "static" since the dawn of the web. CDNs are really really old now. It feels like a new batch of developers don't know that caching is a thing and "static" is a hot buzzword.

A lot of developers are also so caught into framework thinking that they seem to forget that writing html5, with CSS and some lightweight JavaScript library if you need any is an absolutely elegant way to build a modern static website. It seems to me that too many web devs can’t conceive anymore that a static website can be WRITTEN easily and fast and does NOT always have to be generated by a generator or a framework.