The world is unfair and unjust. (At least, depending on how you look at things.) It is not only heartbreaking, but also mindbreaking how the world can be so dysfunctional. In a certain sense, though, that doesn’t matter. Regardless of how much we think about the way things should work, they don’t work that way.
If you don’t like that stupid things are popular, that doesn’t change the fact that they are. And if you ignore the fact that stupid things are popular, it can only hurt you. The same thing applies for not liking the way people use (or misuse) words, or any other bitter truth.
With all that said, it is an oversimplification to say that “should” doesn’t matter at all. The world can change; it’s happened many times before and will happen for years to come. However, if you don’t know how things ought to be working, then you can’t figure out how to properly create the changes needed to realize it.
In simple terms, “should” is idealistic. Idealism is great, but realism is always more immediately important.