Just because you can’t see it does not mean it shouldn’t be addressed and managed. Aaron Marino of alpha m. points out that when we age, we grow hair in strange places.
Depending on where the hair is growing dictates how the grooming is handled. For inside of ear hair, use the nose hair grooming tool. For outside of the ear, options include plucking, shaving, and waxing. It’s your responsibility to manage your own ear hair.