IPs change, maybe you’re at home, maybe on mobile, maybe at the office, maybe at a friend’s house. The aggregate fingerprint of the remaining parameters, is way better at uniquely identifying anyone, then linking any information that “anonymous unique identity” leaves behind to create a profile that over time becomes easier and easier to deanonymize.
https://amiunique.org/fingerprint
Notice how the IP is not even on the list.
IPs change, maybe you’re at home, maybe on mobile, maybe at the office, maybe at a friend’s house. The aggregate fingerprint of the remaining parameters, is way better at uniquely identifying anyone, then linking any information that “anonymous unique identity” leaves behind to create a profile that over time becomes easier and easier to deanonymize.