A web of trust or reputation based system can be built on top of the signature scheme - maybe an appearance of smaller invite-only forums that share reputation. Or maybe it will just become an integrated part of the moderation of existing platforms like Reddit, Mastodon and Bluesky
If you put your name on AI spam people will flag your post and no-one will bother to see your posts for at least a few years.
And if people don't like you what you're talking about then people will flag your post too. This is not going to work at any serious scale – certainly not across the internet – because abuse will be rampant.
If you put your name on AI spam people will flag your post and no-one will bother to see your posts for at least a few years.