How would something like FreeBSD show up on the steam end of year statistics?

Obviously nobody in their right mind is using BSD for gaming but I do wonder how it would show up

I heard there was a bsd port of steam at some point and some people got the Linux build working on it. I have to assume the Linux build would probably report as Linux unless it has some mechanism to determine operating system besides it being hard coded

Having 1% of my playtime be on BSD seems like a pretty good meme to me