It's a fantasy world, but archery there still works just like in real life.

Fiction only really works when it takes itself seriously. If they just don't follow any rules or logic then you know there's no reason to care about what's happening, because the author didn't. In LotR the archery follows the logic from out world. Yes, there's also magic and stuff, which all follows consistent rules in the universe. The magic does not effect the rules of archery. Maybe elves can be more agile with their bows, but it should still be grounded in the rules of their universe.

Versimilitude is important. Self consistency. Just because you introduce one unrealistic element doesn't mean everything else that is unrelated to it should be thrown out the window, too. The existence of a magical evil spirit entity doesn't change how nonmagical humans would interact with everyday physics.