Re: Arrogant architects
They managed it for phone numbers because none of the call routing is done by the actual phone.
As for IPv6, it is no harder than IPv4 for non technical users. In fact, A couple of weeks ago I had a friend discover he was running IPv6 without even knowing about it because it ISP (Roger's Cable in Canada) rolled it out without telling anyone. The only reason it wasn't done years ago is because the ISPs couldn't be bothered until it became a problem.
If you look at the Worldwide Google IPv6 stats, it's clear that the non technical users are having the easiest time of it since IPv6 as a percentage of traffic is lower during the week (9.8% vs the weekend 12%) Another nice thing about that graph is that show accelerating adoption. (Jan 2014 2.5%, Jan 2015 5.82%, Jan 2016 10.4%). At that rate, I doubt IPv4 will be much of an issue in 10 years.