Buh! Me so stupid! Me can use Rusty Falchion, but Balanced Nordic Sword is too complicated for me!
Me... I mean
I also think mentioning
this VGCats strip would fit this thread.
Look, nobody says using swords, axes, spears, bows, or any other weapon is an easy task that requires no skill. However, we assume the player and the companions are already trained in basic usage of all weapon types(though it doesn't make sense with all the companions you can recruit...).
Now, if you know how to use a sword, then you know how to use a sword. There is no reason you can't use a sword because it's too good. Maybe you won't manage to use it to it's full potential, but if you are strong enough to lift it and swing it - you should be able to use it. Pure strength.
Now, bows are a different story. Drawing a bow uses a certain set of muscles. Stronger bows are harder to draw - after all, the distance you can pull the string is limited by the length of your arms, so if you want to pack more power to the bow you need to increase the draw resistance. That means stronger bows do have a requirement other than being able to lift them. It has nothing do to with aiming - it's called power
draw, not power aim - if you don't have enough strength in the right muscles you won't be able to even draw that bow.