Sounds more difficult then modern web frameworks. We've all done this for little projects, but anything with users or development teams, your method is DOA.

I disagree, most webapps, like 99.9% I would say, are just forms, links, and pages. Meaning, they can be done with 0 reactivity and that is the most simple and straightforward way to do it.

Less code is basically always better, so if you can skip the huge amounts of JS and orchestration required by modern web frameworks, then it will be easy. People are out here using React to render static pages. It's very overkill.

That can't be your measurement when you're loading 3 huge js libraries which are a lot more code then say svelte, which also excels at SSG.