Before we proceed, recall that Facebook is now a "morally bankrupt liars" because it "enabled genocide", "facilitate foreign undermining of democratic institutions", "allow the live streaming of suicides, rape, and murders", and "host and publish the mosque attack video".
Let's compare this with one of the ethical browsers listed here -- Tor. Tor allowed Silk Road, which allowed dangerous drugs and fake IDs to be sold, and other sites that hosted child abuse and pornography content.
But privacy! Well, how about PeerTube? Interestingly, PeerTube "viewers don't have privacy" as it exposes the IPs of all viewers. Imagine if YouTube or Facebook does this.
So what gives?