People will be always complaining about everything really. You can't change this no matter what. But some of our fail to notice good qualities of complains, they are motor of changes.
If people are dissatisfied they first complain and the try to change things. Complaining about complaining will lead us nowhere, really.
I can complain about people complaining to show them just how whiny they look. I don't know why that's so wrong.
Because they don't care. I am pretty sure, that hardly any of the people, you are talking about, are reading this.
Because it is a negative response to a negative response, which never leads to anything positive.
Because now we have another place where people are standing in a circle and talk about how bad the world has become.