You can always go to Tools -> Add-ons and mass-update all your add-ons manually at once (Click on the gear icon drop down and select "Check for Updates"). These rules will not block that.
The type of privacy-conscious users/organizations who go to such a length in blocking these domains will also do the update manually or via their own internal update processes.
I'm not sure what most people do will have any relevance to the point I was trying to make.