They replaced their own version of Pocket with this popular adding. No damage done.
Getting a payday is the only explanation for this that makes any sense to me. As to "no damage done" -- I would say "little damage done". However, it's yet another little annoyance in the flood of annoyances over the past few years.
It used to be that I could install Firefox and spend 10 minutes or so installing the extensions that I wanted. Then I was good to go.
Now I install firefox and have to spend at least a half hour going installing more extensions than ever, half of which are to undo the damage Mozilla has done to the browser, as well as having to go through the about:config to disable all of the various tracking "services" and fix the things that I can't find extensions to fix.
This is just the next drip of water in the water torture that Firefox has become.
I could even tolerate all of that if it weren't for the straight-up hostility and disregard for users that Firefox appears to have developed.
It's just sad to see them go down the drain like this. It's like losing an old friend.