All big German internet providers (DTAG, Telefonica, 1&1, Vodafone) are IPv6 Dual Stack or CGNAT'ed for many many years now. Same for all mobile providers.
So everybody is using IPv6 in their home networks without problems.
So everybody is using IPv6 in their home networks without problems.
ISPs realize that selling their old squatted IPv4s to Amazon/Google/Azure more than pays for the transition to IPv6 + CGNAT with a tidy profit on the side.
Then to save more money, they cheap out on the CGNAT so that IPv4 connections have poor performance.
Customers complain to the slow websites (since google/cloudflare sites all load quickly, it must be the site's fault) and they have to adopt IPv6 for that reason.
My mobile provider doesn't allow IPv6 connections.
So ironically, to be reachable from everywhere, I had to turn off IPv6.