That's reality.
The reality is that you are well into your 70's and have trouble hearing. How could you hear a difference in a cable when you started with hearing aids 6 years ago and before that, you likely were hearing impaired for quite some time.
All audiophiles ask is that one listens for what others hear. For those that have trouble doing that, you should first provide a disclaimer of your disability and check your own reality before condemning others by hearing something you do not.

