Yes ...1000 times yes !!!
"It is particularly noteworthy that Oracle adds Btrfs to its CentOS rebuild, but not ZFS, even though Oracle owns all of Sun's original Solaris code – including ZFS. One would think it could find some way to grant itself rights to things it already owns."
Does someone in Oracle hate ZFS or maybe had a bad experience as a child running a ' zpool import -F my_mp3_pool' and lost some of their mp3's !!!