What makes you think Bitcoin will remain anonymous? At the end of the day, nothing prevents banks from end-to-end encrypting payments and thus making our bank transactions anonymous. The reason they don't is because people don't care, not because "blockchain tech" is needed, whatever that means. On the flip side, if we as a society decide that anonymous online payments is a net negative for the good of society, then making bitcoin mining, trading and acceptance illegal basically kills it. At that point, literally only criminals would use it, and even then its use is debatable because if the speculative use case is dead and the developers are all anonymous or in jail, I don't think bitcoin's value could hold long enough for a criminal to buy it, send it, and then sell it successfully without losing a significant amount of the initial value.
Anyway, we're both speculating here. Like I said, if "science" is going to be brought to the table, I'd like to see the science backing your claims. For example, do you have research showing that no trust is required to make bitcoin work? Can the system survive without us trusting the developers, chip manufacturers and miners?