If systemd is the reason, there are several good distros without systemd (I run Void Linux in particular).
If "kubesomething" is the reason, there's no requirement to use it. I think most people don't run it on their home servers.
If containers are the reason, then again, they are not a requirement. But they are pretty similar to BSD's jails. I don't think they are particularly complex.
FreeBSD has a number of strong suits: ZFS, a different kernel and network stack, a cohesive system from a small(ish) team of authors, the handbook, etc. But the usual Linux hobgoblins listed above are a red herring here, to my mind.
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