True, but irrelevant to my point. Whether a particular ISP supports doesn’t matter: it is being widely used by the rest of the world, to the point that it’s half of Google’s traffic.
Vodafone's network is reported to handle around 20% of the world's traffic. It's not a random ISP. It's network does not support IPv6. It is how a big chunk of all internet users experience the internet. Claiming it doesn't matter in a discussion over IPv6 adoption rate is ludicrous.