The object of the tax is your total wealth and the income you get. The tax object does not look at the form of your wealth. The initial purpose of bitcoin is to eliminate intermediaries in transactions not to juggle your assets to become untraceable.
Why does the state have the right to impose a tax on the income or wealth of all citizens in any form. Because all citizens must obey the applicable laws and regulations. The essence of a country has an obligation to protect its citizens. Ensuring fairness and security in transactions in a country. We take the parable if there are taxpayers involved in tax crime or tax avoidance, then the tax institution will have difficulty freezing the relevant assets because the authorities do not have the authority. This is a form of injustice for other citizens. In addition, the facilities that you use in your daily life, such as roads, are owned by the state.