Callender said:
The thing is that it's probably easier to use those addons and leave container tabs enabled. You don't have to use them.
Ya know, that's really the whole point. What would be the benefit of disabling?
Callender said:
I did find a way to remove container tabs from the right click context menu but it involves editing css (userchrome.css) which you won't have unless you've customized Firefox.
Good to know. For those interested in the remarkable things css can do, check out GitHub - Aris-t2/CustomCSSforFx: Custom CSS tweaks for Firefox. Great program. If will change your Firefox experience.