Anonymizing IP addresses wouldn't do anything it you still collect other data that is unique enough, such as a browser user agent or session ID. The whole thing

Anonymizing IP addresses wouldn't do anything it you still collect other data that is unique enough, such as a browser user agent or session ID. The whole thing you're trying to do requires a persistent identifier (to track the user across their browsing session) and since analytics is not functionally-necessary, it will require consent. The only analytics you can do without consent is effectively a stateless hit counter that increases on every operation. For a lot of features, it's more than enough and saves you from all these headaches.