My suspicion exactly.........and I'll point out that even though they know the sex of everybody with a mere review of birth certificates, they still feel some silly need to muddle the biological facts. There is absolutely nothing they won't confuse, and intentionally. Nothing.
And there is no way there have been Sasquatches regularly wandering around Ft. Lewis, WA for the past century without the Army eventually figuring out exactly what is going on. No Way, No How, No Kidding. What they've done with that knowledge, I couldn't know, but I have clues, and they most certainly know it for sure.