At what point do we realize that anybody can be a critic, anything can be worth criticism, and being a critic is very easy while doing anything of practical value is very difficult?

The moment we realize this, I think that we should stop giving critics so much influence and acting like their criticisms are automatically valid for being criticisms. (Maybe it's just me, but I have increasingly low respect for critics because it is actually such a lazy, easy job that drags down everybody even trying to do something.)