The term pseudonymous should be more popular. A crypto id is a pseudonym, right? In the sense that it is a consistent identity you have, just, not one that is initially tied to the identity you were born with.
Social media handles are usually pseudonymous at most.
I wonder where the figure of anonymity is. With writing style analysis, correlating pseudonyms is probably pretty easy these days. Maybe we’ll all start writing our ideas into LLMs and have them do the talking…