Who cares? Generating an infinite number of tokenized identities to facilitate ban evasion will just result in an instance getting defederated. This introduces no real risk as long as the instance is generally abiding by the rules.
Most of us here are fairly anonymous anyway. I dont think being able to add an additional layer of privacy to our activity is really a big deal.
In addition to that, I guarantee you that meta and the like are already running data mining instances on here. Being publicly tied to votes is just more telemetry for the machine. I don't quite understand why people seem to think that is no big deal.