Either there is cognitive dissonance or there is something I am missing,
Anonymous means no identity.
Pseudonymous means any agent identity meant for reuse.
Public means all data available to all.
And, none of those concepts should be conflated with "ID" or centrally issued credentials, like passports or SSN.
Aside from any inconsequential nuances, do you agree?
Then, identity and accountability are inseparable, no?