> i have a question: why do any of this?

As far as I can tell, to get Mr. Robot viewers to try Firefox Quantum.

The Mr. Robot episode from Wednesday, as aired in the U.S., had a Firefox ad on a commercial break.

(Note that I'm not endorsing or excusing the ad extension or the manner in which it was delivered, or claiming a positive effect on the number of users. Having contributed to Quantum technically, I'm very upset about this.)