RoyalBlueNameless I think the cut off for mixed football is 14, over that age it is not permitted.
I think you are right but IMO it is a pretty arbitrary and stupid limit.
I once watched an un-official friendly between an U18s women's team of a reasonably high standard against an U18 mens team. The ref spent most of his time protecting the guys from some very robust challenges from the girls who clearly wanted to make a point about their ability to compete physically, as well as in terms of skill!
Fran currently trains with and, I imagine, competes against our academy guys (U18s I believe) in their training sessions with no problems.
most 18 year-old males are pretty weak though tbf