I think just about the only "essential" cookies to ensure functionality would be session cookies. But I would be surprised to learn that the point is to elimina

I think just about the only "essential" cookies to ensure functionality would be session cookies. But I would be surprised to learn that the point is to eliminate useful cookies. Shopping cart cookies, when designed so they are not shared with 3rd parties, are benign and should not require an opt-in. That's my opinion on most cookie-based functionality, really. Client-side state is useful for a lot of user-friendly functionality. For example, remembering things like Dark Mode, pop-up re-sizing, slider locations (volume for example) are all legitimate use cases that I would prefer as a user to be isolated per client.