Earlier quoted context omitted.
> block “rogue” (read: tracking) IPs. With IPv6 that's as impractical as blocking "rogue" FQDNs.
Why? Just block ranges.
Um, collateral damage?
I'm supposed to be penalized for colocating my gear in a data center (i.e. routable prefix) that hosts a tracker?
If your scheme were implemented the tracker companies would certainly respond by buying a 1U in every data center they can find and buying one routable IP from every carrier in each facility. They can easily afford this.