[32032141]

I didn't realise Firefox came with that sort of backdoor.

[rcthompson]

Browser updates can also change default preferences, and change a lot of other things too. How is this a backdoor any more than auto-updating of the browser is a backdoor? The one issue I can think of is that if you turn off browser auto-updates, this should probably be turned off too.

[user17843]

it's one step closer and more direct control, which is why this is now being used to deliver the quick fix.

The downside is that the process of updating the software becomes a bit fragmented, which is probably confusing users now.