Having read the article the main objection seems to be those advertisers believing this gives Google preferential access to certain information that will be obscured from others, thereby conferring some advantage, and another section about whether it makes it any harder to track down sources of CSAM material.
There is some confusion around the what it means when it is a dual layer proxy system (Google + Cloudflare)
However none of what was discussed really makes having a dynamic ISP address at home an advantage.
And it does not change the simple truth that 2 connections from the same public IP can no longer regarded as being the same person or even necessarily the same household.
The IP alone has not been meaningful since the days that a dial-up modem attached to a single computer placed that device (and not a router) directly onto the Internet during a session.
The proliferation of mobile phones means that most people don't get their own unique IPv4 on mobile data connections either and when on Wi-Fi they roam between connections and mobile data so the marketers had to abandon that reliance.
Likewise how logged in sesssions and shopping baskets are managed has to survive the IP not being an indicator of being the same client sesssion.
prlzx on Zen: FTTC (VDSL) at ~40Mbps / 10Mbps
with IP4/6 (no v6? - not true Internet)
Edited by prlzx (Mon 13-Nov-23 21:11:20)