It's not about a vagina or a dick. It's about whether you like a song or not, whether it has a content or things that appeals to you.
If many guys love Eminem here, it's also because they can relate (almost word to word) to his love songs too. A lot of us been through relationships, break ups and things like that and sometimes it's not easy for men too. So we can relate to his sad stuff.
But, the craziness he shows is too awesome to not like it. And that's also why he's one of the GOAT, because he's versatile and good at almost everything he does. Except punchlines.
That's it.