If over time, the anonymity of Bitcoin becomes less, then it sort of defeats one of the cons of cryptocurrency which is anonymity if I may say. I stand to be correct!
Anonymity for me is not an inherent quality of bitcoin, I do not think the system was designed to hide the identities of it's users but rather to bypass registration processes and all the control it affords to the banks.
And even now the KYC processes can be easily bypassed and is, as it is reputed that most trades made are OTC, Over The Counter and it's private, not really to protect the identity of the parties involved but to keep the transaction quiet and off the mainstream market.