The song's criticism on mass media is mainly related to sensationalism.

"Good" things are usually not sensational. They do not demand attention, hence why the code of known/unknown based on selectors for attention filters it out.

Reference Hans-Georg Moeller's explanations of Luhmann's mass media theory based on functionally differentiated systems theory.

Can also compare to Simone Weil's thoughts on collectives and opinion; organizations (thus most part of mass media) should not be allowed to form opinions as this is an act of the intellect, only residing in the individual. Opinion of any form meant to spread lies or parts of the truth rather than the whole truth should be disallowed according to her because truth is a foundational, even the most sacred, need for the soul.

People must be protected against misinformation.