That doesn't make sense. If the true purpose of this was to give organizations (or individual users) the ability to control specific websites that extensions c

That doesn't make sense. If the true purpose of this was to give organizations (or individual users) the ability to control specific websites that extensions couldn't run on for security/sensitivity reasons, then why is it only a subset of extensions that Mozilla determines? A true user-defined restrict list could, in theory, be a useful feature but as I said, this feature is NOT "here's a list of websites, don't allow ANY extensions to run on it" it is instead "Mozilla is supplying a list of websites, which you can override, but in both cases Mozilla will determine which 'trusted' addons can run on those specific websites using rules/procedures only Mozilla knows and controls." Claiming this is meant to be org/user controllable is very inaccurate. Just because there's some about:config stuff doesn't mean a Mozilla website list and a Mozilla "trusted" addon list are anywhere close to "intended to be user defined." In fact the evidence shows that is objectively not true.