This is a response to what appears to be a complaint that IPv6 is not treated as a first class citizen by some providers, not literally that it's hard.
If anything, IPv4 is much harder. The Internet is in an abusive relationship with NAT, thinking it's normal.
But we're in a world where if a service breaks IPv4, they lose a very large set of their customers and it's the service's fault. If they break IPv6, it's is perceived that if any customer fails to connect, then it's the customer's fault (or their ISPs fault).
If anything, IPv4 is much harder. The Internet is in an abusive relationship with NAT, thinking it's normal.
But we're in a world where if a service breaks IPv4, they lose a very large set of their customers and it's the service's fault. If they break IPv6, it's is perceived that if any customer fails to connect, then it's the customer's fault (or their ISPs fault).