[zamadatix]

The practical issues are unrelated to whether or not the two are mutually exclusive. In practice, the lack of RDNSS support from the get-go was quite the nuisance. Especially when combined with clients that refused to support the optional DHCPv6 method (e.g. Android/ChromeOS). Even with RDNSS, the feature set is quite limited compared to DHCPv6 but you may have to end up implementing both since there weren't enough incentives for all clients to go the extra mile and support it even if some of your other clients do.

Overall these days, beyond Google products, I think the ecosystem is in a healthy spot now and I think IPv6 chose the right path. It can still be a bit more hassle to manage in the enterprise space though and that's the one that needs to most convincing to migrate at this point.