...or people could just learn javascript and stop using any framework.

Honestly, intercooler.js aka htmx always seemed to be the worst of both worlds to me: You get back the heaps of redundant, uncacheable HTML fragments from the pre-SPA days, but you also take the dependence on javascript, unpredictable page behaviour and invisible page state from SPAs.

(Example: htmx now has websocket support - that is, as long as each server-to-client message is an html fragment. Have fun writing a basic websocket chat app and echoing back the entire chatlog including UI and formatting every time someone says something)

Why would you want that?