This is all the old v4 wolds ported to v6. Usually (my provider) you get a native v6 connection. Every client should get all needed information without dhcp. Maybe not the dns, but most people use the google dns anyways.. it's been a while, but some 20 years ago I was in an ipv6 working group and afair our test scenario was working completely without dhcp. No need for ip address management, there are simply enough. The router can send out prefixes etc directly without dhcp. But maybe sone stuff got dumped and people went back to dhcp