One would think that in 30 years there will be some sort of best practises established. Some articles to refer people to. Or at least some people to share their experience and answer practical questions.
And yet there is still only "you doing it wrong, and I won't tell you how to do it right"
IPv6 existence is questioned not because people fail to configure it. It’s because they do not understand the problems it solves. Those problems are so large they’re invisible at the individual human scale. You either know them (which is not a secret) or invent superficial charges against the design.