It’s ok to understand something and disagree with it. It’s another to proudly wear ignorance on one’s sleeve. That’s never a good look.
There’s no way in which IPv6 is less private than IPv4. An ISP issues your house an IPv4 address and an IPv6 /48 network. Both of those can be subpoenaed equally. The privacy extensions work as advertised.
And in reality land, the big companies are the ones pushing for the upgrade because they’re the ones hardest hit by IPv4’s inherent limitations and increasing costs. Same rando in Tampa isn’t leading the charge because it doesn’t affect them much either way.
Google aren't subpoenaed
Perhaps this is the difference, some people are concerned with being anonymous from companies like google, amazon, etc. Some don't mind that, as long as they are anonymous from a government.
Your mention of subpoena suggests you don't care about google tracking you.
> There’s no way in which IPv6 is less private than IPv4
With IPv4 behind CGNAT you share an address with hundreds of other users. This won't protect you against a targeted subpoena, but tracking companies typically don't have this kind of power, so they have to resort to other fingerprinting options.
On the other hand, an IPv6 address is effectively a unique, and somewhat persistent, tracking ID, 48/56/64-bit long (ISP dependent), concatenated with some random garbage. And of course every advertiser, every tracking company and their dog know which part is random garbage; you are not going to fool anyone by rotating it with privacy extensions.