Everyone works on incentives and when it comes to crypto earnings, because the it is earned largely outside of the tracked economy, the incentive is to keep it that way. However, taxes aren't going to disappear and they are only going to get more precise, but is there a benefit for a country not to tax crypto?

Yes because Crypto earnings is what people use in their surviving life's and crypto is also helping the country in it's best way......
So I will say Crypto earnings is great.... Let's all keep Earning from CRYPTOCURRENCY