Because they want to promote discussion and exchange opinions, and maybe advice others against something that they think is a bad idea. To just silently avoid s

Because they want to promote discussion and exchange opinions, and maybe advice others against something that they think is a bad idea. To just silently avoid stuff is a very stifling and unproductive way to handle things. They do not badmouth OOP. It is not a human being with reputation and feelings. They criticize its usage.