most anons don't filter
they have their own conceptual and perceptual built in filters
so shit get blown by without a glance
there are exceptions, like the abusive worthless or repetitive robotic spam attacks that are just a nuisance, or invaluable or harmful posts like gore or cp and which are a form of an attack on the board that hinder the efficiency of communicating important information that anons are here to learn. In those instances in may be helpful to filter them.
Each anon is capable of making their own choice on this matter and may adjust as necessary to suit their needs.