Lets be honest, the number of HNish folks running Firefox is insignificant, compared to number of people using Firefox because their friends recommended it. So even if lets say 1% of the users(HN and similar folks) perform an outcry and go ahead disabling it, the other 99% of the people will still be a huge moat of data. These strategies(though I am willing to give Mozilla the benefit of doubt), had been played out many times, "ops we did this ... emergency update to fix it ... we are releasing this now officially, agree to our terms if you want to continue ... you can always opt-out ... slow boiling frog metaphore ... this is now permanent with the option to disable is gone and forgotten about".