It's been a while since the first-class ZFS support had any advantage for the user beyond an initial install. Maintenance on it was so limited that they ended up rebasing on ZFS on Linux anyway, making it literally less first-class than on Linux.
Today you can get ZFS packages from contrib in Debian and run it for several years with no problems. I know because I did that from Debian 9 (2017) through Debian 12 (2023) and still going. Ironically, Debian 9 took over that ZFS pool from a FreeBSD server, and there is not one part of that migration that I regretted.
Today you can get ZFS packages from contrib in Debian and run it for several years with no problems. I know because I did that from Debian 9 (2017) through Debian 12 (2023) and still going. Ironically, Debian 9 took over that ZFS pool from a FreeBSD server, and there is not one part of that migration that I regretted.