No one can know the total amount of your cripto, only know if the exchanges revelated your identity and this will be iligal becouse protectet laws of identity. This mathers are not so easy like you think.
Hiding our money from government is illegal in most of the country because it is related to tax reporting but when government isn't asking then no need to reveal it that is why developed countries bring regulations and countries who doesn't understand what is bitcoin says that they are banning bitcoin. Tax avoiding is legal and every rich man is doing it so the same goes for crypto earnings when government doesn't have proper guidance for reporting them then the people will take advantage of it.
When it comes to illegal doing then this would be particularly talks about the two because it doesnt matter whether dealing with fiat or crypto.There would be always those people who do hide their assets or simply in correlated with tax. How much more in crypto?
This is why government do really tries to crack out specially on crypto space because they do know that tendency or chances is really high.
And on the time comes where government doesnt really able to control it out then thats the time they would banned it but it doesnt really
make the difference? People could still make out some access if they wanted to.
