Yes, there's "men's tennis" and "women's tennis" but there's not "men's poetry" and "women's poetry"
Basically every American University would disagree with you on that point. People take classes in "women's literature" (or "african-american literature", etc.) all the time. And it is generally the feminists who want there to be that distinction, which only confuses me more.
Well, I think they are. Most drummers I know are a little beefy and most guitarists I know are lanky with large, skinny fingers. Again, anecdotal, but think about it. How many 5'4" guys do you see in bands?
I find it odd too, how it is the feminists that want to keep the distinction, but could you imagine if a male wanted "men's literature"? There would be outrage, and not just because people would think it was about porn. Same if people started men's colleges. Now, this doesn't go for all feminists, my mother is one of the good feminists, the kind that just wants equality, not special treatment, so I know not all feminists are the misandrist pots calling snow black.
And for short guys in bands? Angus Young, Ronnie James Dio, Udo Dirkschnieder, just off the top of my head. I forget his name, but I think the guitarist in Nightwish is 5'5", so not quite.
I do fit the guitarist image you have, though, and my father fits the drummer one.
I would disagree with whoever said that some kinds of metal would take strength, I don't think that the really fast picking takes strength so much as it takes practice to get your hand to go back and forth that fast, maybe some strength in the fingers if you are going to do rapid tapping sections, but I don't think that a female would have trouble getting that much finger strength.
In the sports side of things, I would say that if females played against males, they would be as good as them, the average female would need to work more to get muscled for football (american), but if you have seen the female weightlifters, they have plenty of muscle. The average female might play differently than the average male, but that would be more down to body type than gender.
This is anectodal, but I know a girl that has played soccer for most of her life, she has really big leg muscles now, from soccer, mountain biking, and rock-climbing. She plays at least as well as the males I have seen her play against for fun, including ones that also play soccer, and she doesn't need to strain herself to do it.
If something requires brute strength, the males would have an innate advantage, but working at it can overcome that, and I can't really think of anything else that would give a male an advantage, except for average height.