That can't possibly be true. If nothing else, it's erasure of adoptive parents, or mothers who didn't give birth, among which gay married couples are overrepresented. I realize there is infighting and factionalism even within minority communities, but come on, this stuff doesn't ring true. I've never heard someone called a birthing person outside of a joke.

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.