Decentralized crypto wallet + knowing how to take payments = No need to pay taxes, no matter where you are in the world. But, yes, if you need to buy something like a property, expensive new car, etc, which may trigger big papa, then declare only what you need to declare & utilize methods to pay the minimum taxes on that. But, no no no, crypto is volatile !!! My dear, USDT and currency pegged cryptos are not volatile.
And then there are other methods, for example some of the biggest companies even in the US, pay ZERO taxes AND also get free govt fundings which they do not have to pay back !!! Where there is a will, you can find a way.