[Vinnl]

Using "it doesn't work" as an argument is a losing battle. If you even manage to convince people of that, best case they'll still be in favour "just in case it does work".

The actual, real point is that they're underestimating the downsides or surveillance, and that even if it would work, it would still not be worth it. That's the only argument that can hold, and the actual reason we're against it.

[smichel17]

Moreover, the argument becomes invalid work as soon as someone finds a method that does work. Which creates an incentive for anyone with a vested interest in this spying to create such a working system.

[aww_dang]

Agreed. I would dismiss those arguments under the well established heading of: "The ends justify the means"