I see little reason to use any of the BSDs. Neither for desktops nor for servers. The only benefit I see is that you can take the BSD licensed code and use it to create a closed source product like the PlayStation without having to contribute anything back. I dislike that benefit with quite some intensity.
I ran FreeBSD on my home server for a while since the old TrueNAS versions use it. The supposed simplicity of BSD rings hollow to me as it is just another thing I'd have to learn. I also don't care much about the Unix philosophy or any other clerical reasons that distinguish the various BSDs. Computers and their OSes are a tool to me not a religion. Admittedly TrueNAS worked well for me, but reading up on the differences from Linux got old rather quickly. I migrated to the newer Debian Linux based TrueNAS Scale a couple of months ago because I feel more confident that if anything goes wrong I'd be able to fix it.