Why does being a networking company suggest FreeBSD is the "right" pick?

Serving Netflix Video at 400Gb/s on FreeBSD [pdf] (2021)

(I don't share this as "the answer" as much as one example from years past.)

	▲	HumanOstrich 4 hours ago \| parent [-]
		I think they used FreeBSD because they were already using FreeBSD. The article doesn't mention Linux.