The question is not about removing privacy addresses from the protocol but whether users will be able to use them. If network administrators, or more worryingly ISP force onto users things like RFC7217 then I think this is a problem. All I am saying is that I am a bit worried of reading lots of comments advocating effectively static IPs.

I wonder if the genie is not already out of the bottle anyway. I think pretty much every recent version of windows that support IPv6 has randomized IPs turned on by default so this will require a lot of efforts to reverse this.

I am not expert enough to form an opinion on the problem described in the article but it looks to me more like a problem with the implementation of multicast than with randomized IPs, and therefore disabling randomized IPs (the solution the author opted for ultimately) is in my opinion not something I would like to see generalized.

And again browser fingerprinting is a short term problem. How many versions of each of the major browsers have we seen in 20 years, versus how many versions of the IP protocol have we seen over the same period?