So some random person made a browser extension that automatically collected the login credentials of everyone who opened Facebook on whatever public network you were connected to.[0] Then they publicly released it for free. Ironically, the very first comment in the article I link here is, "Okay, it's evil, but how is this news?"
But the Firesheep plugin was a really big influencing factor in forcing not just Facebook, but a number of companies to switch their entire sites to HTTPS.
The point I'm trying to make is not that you should go out and blow up the world to make a statement -- it's that it's possible for there to be a problem that's trivial to exploit, and that is regularly exploited by criminals and businesses, and that is widely known to be exploitable, and for some reason people will still ignore it.
But if it's personal, if your next-door neighbor or your weird coworker can suddenly start doing it, then something clicks and people realize, "Oh, this is actually a real problem."
There's no technical difference between what Superhuman was doing and what every other marketer is still doing, but people are weird about what exactly they're willing to care about, and if the Superhuman controversy can be used to direct some of that anger towards structural, useful goals, then is that really a problem?
I understand that sometimes the specific triggers that make people care are stupid, but my response to that is never to ask people to care less. It's already hard enough to make people care about things.
[0]: https://lifehacker.com/firesheep-sniffs-out-facebook-and-oth...