I was following a thread and was amused by some of the answers. I'm interested to see how much people know.
If you keep your bitcoins for a long time somewhere in cold storage, hardly anyone will know about them. However, if you go with them to exchanges and exchangers, while registering and leaving your information, then there is no question of anonymity here. It should be taken into account that bitcoin is only relatively anonymous and if you will simply carry out trading activities, even without leaving your data openly anywhere, then the secret services will be able to easily calculate you if you so desire.