I'm all for anonymity, but anonymous identities should be taken with extreme skepticism.
I'd really like to see a hierarchy of trust. Get some certs signed by a reputable bank who has seen you in person, high trust. Self-signed certs, much less trust. Completely anonymous, you get basically shadowbanned; people who want it can go looking for it.
The Internet is an information flood (and so much worse now that we have LLMs). Filtering it has always been the key challenge. We should be able to filter on source, while still allowing people to say whatever it is they want. We just don't have to read it.