For anyone who thinks IPv6 is without merit, I recommend reading up on the various challenges of NAT traversal [1]. In cases where CGNAT is deployed in particular, there are scenarios where the only way to make everyday P2P connections work is to route traffic through a 3rd party - which can impact latency and bandwidth.

While IPv6 doesn’t make establishing a P2P connection trivial (there are still firewalls to contend with) - it does simplify things dramatically. And as someone who is behind CGNAT, I am very grateful for the existence of IPv6.

[1] https://tailscale.com/blog/how-nat-traversal-works