I would not claim on best distro for all the types of tasks, but in certain areas, when you well, just need stable Linux compatible environment related to sysadmin and development tasks - indeed it rocks, agree.
Consumer grade SSDs 100-500 iops, datacenter SSDs in thousands (like ~ 5 year old samsung model on Hetzher AFAIR had ~ 3000 iops in that test). Cheap VPSes - easily in 5-30 iops of this sort
more often then not, fsync/fdatasync is overlooked by programmers
embedding transparent containers into Windows native apps looks huge, extra cool is GPU access from container and mentioned OpenClaw like tool cases in mind, ports and folders.
Hard to tell about FreeBSD, it's basically extincted, but think of webhosting servers, wordpress, cPanel/Plesk and alike.
often it's ssh'able with things like rbash and other restrictions and almost always you, well, can run something there (as you can edit php/other files right from web management ui).
Extinct? Far from, just doesn’t draw the crowd/press Linux does. An OS used as a stable server OS workhorse with exceptional ZFS support and doesn’t have to push for the desktop market doesn’t mean it’s extinct.
I’ve run FreeBSD on stinkpads back in the early 2000s fine. I prefer MacOS these days as a daily driver - hardware quality.
But server OS is FreeBSD. Void when I need Cuda/docker/etc. (Yes, FreeBSD has docker support, but just use Linux if needing that.
Try to search vacancies for FreeBSD or candidates with FreeBSD knowledge/background, you will be surprised, its desert.
Even TrueNAS realized it's a dead end for reaching wide audience needs and migrated to Linux (as you mentioned zfs, your probably heard a thing or two on TrueNAS).
I have not tried in the last 10 years, so don't have numbers, my ballpark figure about having small infra team say of 5 persons and try to hire for FreeBSD would be longer and more expensive.
I see somewhat tolerable Linux Corp fleet of laptops (still meh, but somewhat works), what you will reply to your users when they complain on WiFi or Zoom not working and how will procurement work for you interesting questions for me.
Red Book for FreeBSD animal, can meet somewhere deep in tundra, but not a widespread species- extinction form my POV.