To be clear, rsync.net zfs should work with any/all shell or script-based ZFS replication tools. The basic documentation for zrepl here is good, but you can also use sanoid/syncoid, zsnapzend, etc.
I found an old 2017 issue about one user's reasoning when deciding between sanoid and zsnapsend: https://github.com/jimsalterjrs/sanoid/issues/102
And another huge benefit for my setup is the ability to use an HTTPS connection for the replication instead of SSH. My source and target servers are in different continents so there's pretty big latency. zrepl's HTTPS server manages to transfer data at ~890Mbps while SSH doesn't deal with the high latency as well and only manages ~190Mbps.