Well, I do believe that ear plugs can reduce hearing damage by simply decreasing your ability to hear, much like sticking my fingers in my ears. However, I do not believe that they are some kind of magic bullet that can filter out noise, while at the same time actually increasing your ability to hear sound more acutely. These ear plug companies
do not spend money testing their products, nor do they give a heck about you or your hearing. They are in business to sell a product and make a profit, period! If you feel
good about wearing them, then by all means, wear them.
You are over simplifying something that is a bit more complicated. As an audio engineer of 30+ years, I can tell what works and what doesn't.
Let's use the example of sunglasses.
There are lense colours that can actually increase perceived contrast by filtering out the blue spectrum.
Very effective in certain snow conditions. I have used them and they work. They don't increase your ability to see but reduce the light specrum that interfears with your vision.
A similar effect can be had with certain hearing protection.
I use the same kind of earplug that musicians use. They are not the same as sticking my fingers in my ears.
They are designed to reduce overall SPL but maintain a fairly natural spectral (sound) balance.
By reducing the masking sound of the white noise (wind) you are able to hear other sounds just fine.
In no way do these plugs increase " your ability to hear sound more acutely" , but they reduce the masking effect of the "bright light" of the wind noise.
Your argument that the product is ineffective just because a company is out to make a profit is a weak one.
Just because the company that made your brakes on the FJR is out to make a profit doesn't mean those brakes won't stop your bike.
Wear hearing protection or not. Your choice.
But before you make that choice, ask someone with tinnitus how their life is going.