'Player of the Match' can be used in every possible match, men/women/boys/girls/mixed. So why not use it? Why is it a problem?
Why in a men only match, would we need to specify that the best player of the match was a man?
It's all a bit daft really and a load of fuss over nothing. It really doesn't matter if people use the wrong term here or there, I don't actually see anybody really get bothered about it, it happens. Sometimes after my daughter's matches I ask her who got 'Man of the Match' and then correct myself because it sounds daft. Terms change, the world changes too. Some people though just don't like change and see the need to push against it, even when it's over something pretty miniscule.