Note that 95% of people browsing with IPv6 are probably using SLAAC with privacy extensions, so all your devices IPs should be frequently changing (at least every day, but you can lower the timeout). Only the subnet would stay the same, similar to a NAT’ed IP.
As it's evident from NAT they can track even behind a single IPv4. As long they know your prefix the privacy extensions don't really help. Of course one could have a dynamic prefix similar to dynamic IPs residential ISPs use. It's funny, in the past a static IP was considered a valuable feature for a residential internet connection. Nowadays, I'm wondering if dynamic IPs are more viable from a privacy perspective.
