Don't give them an inch. The US defense budget is $1T. They can't spend it all on surveillance, but let's say the tech companies and the government spends that much every year combined. Our victory condition is to increase the cost of surveillance and deanonymization to >$10K per person per year, which is very doable. Every little habit and precaution you take against online tracking will raise the cost, probably a lot more than you think. Spreading the word multiplies that. Every open-source program and protocol spec that aims to decentralize and anonymize is like an incinerator for the surveillance dollars. And if you're more competent than that, you may consider following in the footsteps of Daniel Bernstein or Edward Snowden and make some trillion-dollar dents.
Anonymous and uncensored information exchange can prevent the vast majority of violent conflicts and shorten the necessary ones. Most violence in human history could have been prevented if every human being had 1) the ability to telepathically communicate with anyone else in the world without being eavesdropped, and 2) the ability to broadcast information anonymously to all of humanity in real-time. I will leave the details of why for you to deduce. These things are within reach right now for the first time in history. So we can and should build the decentralized web, and democratize the entire computing supply chain all the way down to chip fabbing and electricity generation. It is the greatest unrealized potential of the Internet, and we mustn't cede ground to ensure the path to that future remains open.