Comment by ryao

The new features should interact fine with encryption. They are implemented at different parts of ZFS' internal stack.

There have been many man hours put into investigating bug reports involving encryption and some fixes were made. Unfortunately, something appears to be going wrong when non-raw sends of encrypted datasets are received by another system:

https://github.com/openzfs/zfs/issues/12014

I do not believe anyone has figured out what is going wrong there. It has not been for lack of trying. Raw sends from encrypted datasets appear to be fine.