Put on a scale what we gain and what we loose, and just let it sit.
Login sessions is one thing that cookies solve well - we'd have to go back to session IDs in URLs with all the problems that causes.
... which also shows that cookies are not the problem because you can track users using an infinite number of different ways.
Now stricter enforcement of consent laws as well as regulating in which ways consent can be asked for, that would make sense.
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Put on a scale what we gain and what we loose, and just let it sit.