When you give up citizenship you have to pay taxes to a certain point if you owe any. Also you don't gain anything by renouncing citizenship, you just lose whatever rights you had. So now the US government can legally spy on you am I right?

It all comes down to what is US citizenship worth to the individual? For some people, citizenship isn't worth as much as they can gain from cryptocurrency. That being said, just because you renounce in one place, doesn't mean you'll be more attractive as a stateless person.

My stance is, if I choose to remain a US citizen then it's in my best interest to be a good citizen. That means I have to comply with the law, pay the taxes I owe, adhere to the customs as best I understand them. I currently see nothing that can be gained by being a bad citizen in terms of freedom.