Earlier quoted context omitted.
If we're going to play this game, I think dissuading people from using "mother" in the example of "motherboard" is offensive. Mothers are the source of human life on earth, and in that capacity are revered and honored. When we say motherboard, we're making an analogy that suggests the board's significance and universal connection to everything. To discourage the term as an analogy for things that are a universal sour…
The official PC term is now “birthing person”, “birthing people”, “people giving birth” and similar. Think of that what you will.
For what it's worth, in support of the original comment's claim, I just dug around the Pixelbook documentation all over the place and I can't find any mention of the motherboard. But it doesn't seem they renamed it to "mainboard" or "birthing person board." They just dropped it from the specification completely and don't tell you anything about what kind of motherboard you're getting.