I suspect it's more in teh sense of a "Don't let the door hit you on the way out..." retort.

That is, if you're offering such a service that exploits users for their data, then I would never want to use it, so it might as well be blocked, for all I care.

Maybe even desirable if it was, so you don't come across it by mistake and sign up without doing proper diligence.

Freedom of choice is nice, but there's an argument that putting rat-poison in food products isn't ok, even if you label it on the package.