I suppose it might look pointless if you need to jump through the hoops to get it running. In FreeBSD ZFS is properly integrated, and ZFS is a perfectly fine d

I suppose it might look pointless if you need to jump through the hoops to get it running. In FreeBSD ZFS is properly integrated, and ZFS is a perfectly fine default root filesystem; there's no reason not to use it, except eg very memory-constrained virtual machines.