It's not diminishing. There have always been those who have used less than perfect English. Now we just see it a lot more often due to the ubiquity of the internet. Before the internet, there was still a low-income, uneducated population. There was still a population who had the resources but not the wherewithal to use proper language. Nothing's changed. Nothing will change. Nothing NEEDS to change. This isn't a horrible, life-threatening condition that will bring about the demise of mankind.

You're very arrogant to think that you can make a difference, even if a difference doesn't need to be made.