"FreeBSD is primarily a server OS" - since when?

The FreeBSD Project describes the operating system as "used to power modern servers, desktops, and embedded platforms." In other words, a general-purpose OS. https://www.freebsd.org

Nevertheless it's common to hear people refer to FreeBSD as "a server OS" or at least "primarily a server OS". And in fairness that's been a major use case since the 1990s, and the most obviously visible one back in the day it was used to host a lot of the world's most visited websites. (People probably don't notice millions of embedded devices, another FreeBSD use case, in quite the same way.)

"The Power to Serve" has been the official motto - so official that it's trademarked by the FreeBSD Foundation - for some time, but I'm not sure on the exact date. https://freebsdfoundation.org/legal/trademark-usage-terms-and-conditions/

This server-first description is sometimes used in arguments along the line of "you shouldn't use FreeBSD for a desktop since that's not what it's meant for", or to criticise recent investments in laptop usability. And I don't want to come across as dissing such arguments since, as above, it's not a completely unfounded claim. Even the phrase "to power modern servers, desktops, and embedded platforms" puts "servers" first and that's surely not by coincidence.

There are other sides to this story, e.g. FreeBSD also has a long history being used as an X Window UNIX[-like] workstation, which evolved into the modern laptop/desktop experience. But rather than argue about whether, or to what extent, the statement "FreeBSD is (primarily) a server OS" is true, I'm curious when this idea became so prominent. Anyone who's been in spaces FreeBSD gets discussed must have heard that claim hundreds of times before.

The original Berkeley Software Distributions had a strong reputation for networking as early as 2BSD in 1978, when Eric Schmidt (yes that one) produced Berknet as part of his master's thesis, and even more so for the performance of the TCP/IP stack in 4.2BSD (released 1983). But I haven't heard of 4BSD being described as a "server OS". https://en.wikipedia.org/wiki/Berknet

Was Bill and Lynne Jolitz's 386BSD ("Jolix") intended as a "server-focused OS"? Did the contributors to the UPK (Unofficial Patch Kit to 386BSD - the group that split into the FreeBSD and NetBSD Projects) have a particular interest in servers? I know FreeBSD 4 (released 2000) had a very strong reputation in the space, but was the idea that "FreeBSD is for servers" already established in the 1990s? Is this actually less about FreeBSD at all, and more about the improvements in usability of Linux as a desktop experience around that time - leaving FreeBSD competing primarily in headless use cases?