I don’t agree that falsetto makes a man sound like a woman. There’s a huge difference between, say, a tenor in falsetto and an alto in her chest voice. There are, however, tenors that sing so high, without falsetto, who really do sound like a woman. And then there’s Freddie Mercury, who could sound like just about anyone.
One of my favorite music jokes: What’s the difference between a high tenor and a low alto?
The tenor doesn’t have hair on his back.