Bitcoin helps avoid taxes, but if the user wants to buy real estate, open a business or make a large expenditure, the bank will ask for a source of funding for this operation. The user will still have to legalize his money or live his whole life renting what he needs. In the long term, the state will not be the losing side in this fight, and many crypto users will be forced to pay taxes.
Yes, but anyone who keeps their bitcoin in cold storage will always have an advantage in that regard. If you have a good net worth in real estate and they hit you with a big tax increase, you're screwed because even if you wanted to sell it to move to another country with lower taxes, that increase will already affect the sale price and it will take you a while to sell it, whereas if they hit you with that same increase on your bitcoin earnings, you can move to another country that very same day if you want to.
This also applies to political risk scenarios, or war. If you see that your country is going to be invaded, or that a civil war is going to break out, with bitcoin you can leave the country, period. If you have real estate or a lot of shares in the bank, all that gets complicated.
In my opinion, this issue should be discussed from a specific situation.
For example, to get a non-tourist visa in another country, then almost everywhere you need to confirm the source of funding. If you sell real estate and pay taxes, then you will have it.
For example, all European countries require that a person's money be legal and this be confirmed by documents. Therefore, if you are preparing to move to safer countries like Europe or America, then you should show the necessary legal income to get a visa.