Scott Bradner wrote on 05/11/2021 09:50:
https://www.google.com/intl/en/ipv6/statistics.html - total IPv6 at Google 32.41%
I suspect, without direct evidence to hand, that these figures are heavily weighted by small numbers of larger carriers pulling content from small numbers of larger content networks. There is a long tail of sites and networks that are not ipv6-enabled now, and are likely not to ever deploy the protocol, at no particular disadvantage to themselves.
Nick
