I'm not sure it's that much more complicated as such, beyond being different/unfamiliar.
Just setting up SLAAC is very straightforward, probably (ignoring any unfamiliarity issues) more simple than DHCP?
Pulling addresses from your service provider via prefix delegation can be a bit funny, and could do with being a lot more polished. Instructions/community support in particular can be problematic as ISPs tend to use different prefix lengths, rather than just standardising on /56. And also less relevant if you have a static allocation, which is potentially more likely with IPv6 than IPv4.
And DNS becomes more important, as does firewalling, no more relying on the somewhat dubious NAT safety net.
Just setting up SLAAC is very straightforward, probably (ignoring any unfamiliarity issues) more simple than DHCP?
Pulling addresses from your service provider via prefix delegation can be a bit funny, and could do with being a lot more polished. Instructions/community support in particular can be problematic as ISPs tend to use different prefix lengths, rather than just standardising on /56. And also less relevant if you have a static allocation, which is potentially more likely with IPv6 than IPv4.
And DNS becomes more important, as does firewalling, no more relying on the somewhat dubious NAT safety net.