You have to wade pretty far until this gets to the main user-visible advantage (global routability) and doesn't make a very compelling case of why you'd want it

You have to wade pretty far until this gets to the main user-visible advantage (global routability) and doesn't make a very compelling case of why you'd want it. People have been lulled into this state of apathy about crippled IPv4+NAT connectivity (or don't know any better). The problem is that the network effect/chilling effect wrt app deployment/development isn't something that a user instantly sees, and the other, more immediate benefits are currently only significant for pretty advanced users (who are already aware of how NAT makes their lives hard).