All I know is that I wouldn’t have attended a function that specified it was men only, however tasteful the invitation card.
I once did attend a black tie event in Manchester that our senior partner didn’t fancy. It wasn’t men only but heavily weighted to alpha males and the occasional trophy wife. Scantily clad women were used liberally as decoration like a 1970s motor show. Ricky Hatton and Alan Sugar were there (not that I knew who Hatton was). I beat a hasty retreat as soon as could. I was relieved to find it was the 21st century outside and I wasn’t lying in a coma somewhere having an Ashes to Ashes experience.