There are still countries with zero IPv6 on mobile, e.g. New Zealand. All three mobile carriers refuse to deploy IPv6 on mobile despite two of them doing so on

There are still countries with zero IPv6 on mobile, e.g. New Zealand. All three mobile carriers refuse to deploy IPv6 on mobile despite two of them doing so on their fixed line networks. Do agree with your point tho IPv6 should be considered a possible solution.