I'd argue there's a
vast difference between an automatic update for something that was already manually installed, by the user, and automatically
installing something without any indication to the user that it was installed. Worse, it's impossible to argue that this was even a
useful extension.
I don't watch television, and I don't keep up with any popular modern shows. I had no idea what Mr. Robot was until looking through this thread, and the description text for the addon was, at first glance, suspicious. This was a terrible idea and isn't even remotely analogous to applying security updates automatically. If I have something I specifically installed, fine, I can expect those addons to be updated automatically. I don't expect them to side load something I don't even want. "Delight fans" my ass. You have to be a fan first, and I'm not even sure most people who are fans of Mr. Robot would think this is a particularly good idea.
Funny enough, the only thing I can think of that's even remotely similar to this is the "Hell, Dolly" plugin for WordPress, and that's installed out of the box as part of the distribution.