Earlier quoted context omitted.
Try with these instructions: https://community.mozilla.org/en/campaigns/firefox-cookie-ba...
> We’ll always hit “Reject all” if we have that option though in absence of a “Reject all” we’ll do what you’d do otherwise and hit “Accept all” Huh, often if Reject All isn't available there is a customize option that's basically the same thing. That's very different from Accept All.
You can set the pref to 1 instead so there is no accept all: https://github.com/mozilla/cookie-banner-rules-list