Does a 7 day expiration matter if the tracker can just set new cookies with new 7 day expiration dates as it tracks you? Also, Firefox partitions cookies by si

Does a 7 day expiration matter if the tracker can just set new cookies with new 7 day expiration dates as it tracks you? Also, Firefox partitions cookies by site (aka Total Cookie Protection), so first-party facebook.com cookies, cross-site facebook.com cookies on example.com, and cross-site facebook.com cookies on example.net all get separate cookie jars. https://blog.mozilla.org/security/2021/02/23/total-cookie-protection/ https://blog.mozilla.org/security/2021/02/23/total-cookie-pr...