I switched to a fork of Firefox (Zen) without their bs..

So long as they remain open source

Now imagine if they had something to advertise which people actually want!

Well, Thunderbird gives me hope.

I don't see how they think it's a good move. I'm not speaking about people being upset. Most of the Firefox users are either people having at least some tech knowledge or people which use it because of a person with some tech knowledge.

And most of these people use an ad-blocker, know how to install a fork and so on. So, from the beginning, I don't know who think it's a good idea other than to kill Firefox.