Indeed. Thanks for clarifying. That should work just fine.
Combined with firejail in private mode if no download is involved (well, for
the slightly savvier users), that would be a good way to make rare exceptions
for JS.
Also, that's assuming ublock origin actually allows only the minimal JS
needed. But I doubt it since I run both (with default settings mostly), and I
still can allow extra JS files for a given page in noscript.
Online chess, online coding courses, banking, that one link that demands JS
(usually I dismiss it because I hate such behavior), all these are (to me)
worthy of some JS exceptions.