The truth is that, they shouldn't be any worry on paying taxes on Crypto revenues. The choice is totally in your hands, that's the beauty of decentralization. You move, spend, and hold your wealth without government interference.
The only thing that would make you pay taxes on Crypto is, probably, sense of patriotism. Else, you have no reason to worry about as you can easily make your Bitcoin untraceable.
The above diagram explains the beauty of decentralized blockchain transactions in contrast to the centralized financial flows controlled by the banks and governments, and why it's difficult to trace Crypto. More reason you shouldn't worry about taxation to your Cryptocurrency earned revenues.
I totally agree with you when it comes to smaller amounts.
However, when it comes to very high amounts of crypto funds, which you want to exchange in fiat and buy a new car or house, for example, then you have no choice but to pay taxes.
You can't hide such big transactions from the tax office, and if you can't prove the origin of the funds, all your money will be confiscated and you will be punished.
Most of us don’t really care about the small amounts of crypto funds we withdraw, and that’s no problem to hide from the tax office.
In fact why bother with it at all when according to the tax law in my country, in case we keep crypto funds earned by trading for at least 2 years on a trading account, we are exempt from paying taxes