Almost half the world is using IPv6, according to Google's traffic statistics. In some countries it's 60%, 70%+ and I'm sure includes plenty of average guys.
This is mobile phones dominating that number. Almost every 4G / 5G phone right now uses a dual stack IPv4/6 connection. This is not necessarily problematic but home broadband is still lagging by a lot. I sometimes never get a prefix assigned. I have to redial PPPoE as IPv6 link uses IPv4 session. It's not plug and play for home broadband unless you use their modem router combo which has other issues.
Good point but there is still half of the worlds population missing which is due to missing auto configuration / proper support by the ISP. And I would guess that these numbers represent connections from home networks and not from people on the go using mobile data.