>>The OpenZFS project brings together developers from the Linux, FreeBSD, illumos, MacOS, and Windows platforms. OpenZFS is supported by a wide range of companies.
Well the rest of your points is like saying i don't like OpenBSD because it cuts my CPU in half, yes i know i could change that but i still don't like it, and i don't like Linux because of the Debian-Fiasko, and OpenSSL is terrible because of heartbleed ;)
FreeBSD just doesnt offer enough benefits compared to Linux for me. OpenBSD in the other Hand is very special to me.