Comment by fastball

The old unix administrator would expect a platform to ship choice of JS that would be in /usr/bin/JS. The local administrator would add their local choice of JS /usr/local/bin/V8.

The browser would then have a configuration option of which JS interpreter to use.

Bad analogy. "Some users disable it" is very different from "it was introduced without any notification or information about what it does and the vast majority of laypeople have negative sentiment toward it".