I'm kinda surprised to hear they didn't already do that... I guess I just assumed that was the entire point of them acquiring "honey" and had been doing it since at least that point.

They do have a ff version

https://addons.mozilla.org/en-US/firefox/addon/adnauseam/

Adnaseum is a fork of unlock that fakes viewing ads. The thing is its banned from chromes app store because google is at its core an advertising company.