Unless Facebook obtained lawful consent to intercept communications between the computer owner and another party, using an app by choice is not a defense to wiretapping. That the plaintiffs are alleging wiretapping suggests that the VPN terms of use contained no such consent to intercept communications between the computer owner and other parties.
I agree it’s fair as an analogy, and I used the word in my summary of the situation. All I wanted to say was that what Facebook actually did didn’t match my initial expectation when I read “wiretap”
Wiretapping is what you do to others, generally without knowledge. Facebook paid individuals to record what data their devices sent out.