The reality is with IPv4 I can memorize all of the IPv4 addresses of every light bulb, every robot, every thermostat, every plant watering device in my residence, and I can hammer out CURL commands to control everything almost from muscle memory in the event of a DNS hijacking.

Windows and many Linux distros by default enable the privacy extensions on the link local address; it's randomized for a period of time. This is right off a Windows 10 VM:

ipconfig:

  Link-local IPv6 Address . . . . . : fe80::9aaf:a280:d593:db1%2

RHEL 9:

  [user@localhost ~]# ip addr | grep fe80
    inet6 fe80::3544:fe14:5cf:5ad9/64 scope link noprefixroute

  [user@fedora ~]$ ip addr | grep fe80
    inet6 fe80::7752:d2c6:82c3:482c/64 scope link noprefixroute

  user@ubuntu:~# ip addr | grep fe80
    inet6 fe80::5ffe:c565:9de2:58f8/64 scope link noprefixroute

If the problem wasn't obvious, the problem is that IPv6 addresses (and also MAC addresses) are not human readable. IPv4 addresses, on the other hand, are.

IPv6 adoption might be farther along if the addresses were human readable instead of eye-rolling machinations of a small subset of people who speak strictly in hexes.