Red Hat deprecated BTRFS in its products (and does not have anything like ZFS).
Its focuses on XFS from 1993.
Its Stratis idea is just a joke comparing to what ZFS is.
They should finally admin (like Canonical) that OpenZFS is the way of future filesystem for now.
Linux world should put their religion (GPL) aside here.
Besides above filesystem 'issue' the PulseAudio, systemd and SELinux are not hated without reason ... many people just 'love' what Lenny has to offer.