It's funny you mention rugby, because I have a cis female friend who plays. She's 5'11 and ~180lbs, and an absolute tank on the field. I'm trans, and we're basically the exact same size/weight. Her 1RM on basically anything other than bench has always been higher than mine, even as a guy
Just to add on to this: I was an all state scrum half and played at a division 1 school in college, and I have played with women that can absolutely wreck my ass on a rugby pitch. There's absolutely no reason a woman couldn't play with men if they're at the same skill level.
And luckily they didn't purge military leadership that's actually loyal to the constitution, and then use Republican congressional obstruction to prevent promotions for 4 years so Trump could install loyalists...