I thought that "CNAME cloacking" was already addressed by uBlock and most similar tools last year already? I don't think it's a very effective method to bypass them.

At least, that's what I can gather from the linked issue and https://github.com/gorhill/uBlock/releases/tag/1.25.0 – so I'm not sure if I understand that article.

In goatcounter the whole CNAME thing was just intended as a cute "shortcut" so you can have "stats.example.com"; I assumed that all adblockers would deal with that correctly, and it was never intended as a way to bypass them (and certainly never advertised as such).

As for "selling IP address", how do you know "blog.example.com" isn't just collecting and selling that? Or HN for that matter?