Yes it does. Users now have a unique IP address that is now static. Yes you can rotate your exact IP inside your block but you still keep the same subnet.
Comcast gives you a /60 block that you can assign multiple /64's out of.
My computer rotates out IPv6 addresses every 30 minutes using SLAAC with privacy addresses.
While you can identify the /64, there is no guarantee that it is a single user, just like in IPv4 because of NAT there is no guarantee it is a single user. It'll identity a household, but that's it.
"Customers are allocated a /48 block of addresses - this is usually per customer, and so a customer with multiple circuits or sites will have a /64 allocated from the larger /48 block"
Spectrum assigns a /128 to your router via DHCPv6, but you also get a delegated prefix. That prefix seems to be a /64 by default, but you can request and receive a /56.
But, point me to a single ISP that gives a cable subscriber more than one IPv6 address. or a /48 as initially everyone was hopping.
ISP profit from NAT. They will never get rid of it. Even if you get a /54 /64 the ad networks will just learn to assign /54 as they do today.
But, another point, ipv4 today is barred from being used to form your advertising profile under current legislation.