just look at the ND table. Nobody is ever going to scan a single /64 of v6, ever.
...
how would configuring DNS even work without having to see the addresses, and how would SSH'ing to a device on the LAN work without seeing the addresses
...which a local IP address is, conveniently
I'm not willing to spend the time to set it up on my internal network until I start to lose connectivity to some places, sorry.
When people tell me ipv6 is already widely used, I ask them what name I should use when I want to ssh to their ipv6 device, their phone for example. People don't notice ipv6 isn't working because the Internet has evolved into a world of two classes of people, the rich and powerful like Amazon with addressable IP endpoints, and the second class citizens like you and me who can only connect to the rich and powerful, not to each other.
Problem is, that's not my only fiber. I have two from different ISPs (Romania, so they're cheap). With ipv4 i only need to change the default route to the other router to choose which ISP i use. With ipv6 where my internal machines get an address from the ISP, i don't know where to start.
And I definitely don't want to spend a couple thousand on an "enterprise" multi home router that will do it for me...