Anonymous coins are coins that can be a threat to the government, because anonymous coins are created anonymously and have privacy so they cannot be tracked by the government. these will be pros and cons.
the future of anonymous coins will certainly be good if the interest of anonymous coins continues to grow without government intervention.
I do not think anonymous coins will be supported by the governments. If there is a regulation on crypto money, there will definitely be a limitation on anonymous coins. Their development may be due to darkweb, which in the end may result in the illegal acceptance of these coins.