IPv6 solves mAAAAny issues. DNS issues causes MAAAAny more. I dAAAAbble in v6 here AAAAnd there AAAAnd the situAAAAtion is still pretty dire.
1. http://www.worldipv6launch.org/participants/?q=1
2. https://www.google.com/intl/en/ipv6/statistics.html#tab=per-...
I was referring to people with broken IPv6 setups, mostly Teredo and 6to4 (old Mac OS X versions), for whom IPv4 worked but IPv6 was not actually routable. At the time, publishing AAAA records would lock out all of those users.
He was referring to your lack of qualification in the above. An IPv4 user can indeed access Google, which is an IPv6 enabled site.
A user who only has IPv4 connectivity relies on their software recognizing this when accessing an IPv6 enabled site. Software's failure to do so is one of the main reasons for the slow rollout of IPv6.