I don't think it's either. The PR machine was screaming loudly about the astronauts' gender coming up to the spacewalk. So, it just carried over. It'd be weird

I don't think it's either. The PR machine was screaming loudly about the astronauts' gender coming up to the spacewalk. So, it just carried over. It'd be weird to start trying to cover that up just because people might make jokes some find distasteful.