Great questions. First, no, most people aren’t aware. That’s why so many people are talking about this article.
Second: if you don’t care about the artists you listen to, then you don’t care. I can’t make you care. If you want to listen to a local band that moved you to tears with a beautiful song last week and are perfectly comfortable with Justin Bieber getting your money instead, then this isn’t for you. This doesn’t affect you, and you can ignore it.
But a lot of people do care. The article is for the people who care. It’s right there in the third paragraph: “If you love music and want your money to go to the artists that you listen to, consider this simple hack.”