The problem is that no browser can allow you to escape the horror that is web standards & practices that have been developed over decades [...] practically the entire web is reliant on JavaScript, [...]
I've been saying it for a while: continuing to play catch is a losing move for Mozilla or for any independent browser maker.
The real move, is to switch to or at least integrate an alternate internet, something that uses a protocol that is simpler and more limited by design - just get rid of Javascript (or of "remote execution", really) and you instantly get a much leaner, much securer internet design.
I've heard pretty good things about the Gemini protocol, but IMHO they went too far too extremist into the "text internet" philosophy, and as a result is a raw downgrade from Gopher. Gopher could actually be a good option.