It's right to be critical of the slippery slope argument, except that you can take a look at history and see how even in western governments in "free" societies have spied on those who challenge the status quo. I think we're right to be skeptical of surveillance as there is a proven track record of this kind of behavior from governments and corporations.

Take a look at a law that's being proposed in Canada right now. It includes allowing the government to request take downs for a broad number of reasons including otherwise legal speech that they consider to be offensive, data retention, what essentially amounts to a national firewall etc.

Cory Doctorow, who is from Canada originally, has a good write up on it: https://pluralistic.net/2021/08/11/the-canada-variant/#no-ca...