You tapped on topic that sometimes can be overlooked. Noise pollution can be as bad as environment pollution. I don't know yet why some people cannot see this as a problem.
There are some that make a lot of noise with music or devices that they don't think it will disturb others. It's a complete selfish attitude.
I presume there are people on the streets using cotton in the ear like those ones who wear masks in regions like china. Anyway, eventually noise pollution will affect anyone's wellness.
You are right, noise is one of the threatening pollution in modern life. Yes, we sometime forget how we are all connected in the environment.
Our selfish habits causes harm to other people and surrounding. for eg- smoking in public places or make a lot of noise with music or devices as you mentioned. It really is sad.....
Thank you for leaving your honest opinion. Have a nice day @edave!