Earlier quoted context omitted.
There are an infinite number of bad ideas in the world. No-one’s life would be improved by hearing them all.
Maybe not. But is one’s life diminished by hearing bad ideas? I don’t think so. For instance, the idea that the Earth is flat is laughable. But my life doesn’t deteriorate nor improve based on that idea. We can all agree it’s a stupid idea, laugh at it, and move on.
If the bad idea was that you and your family should be killed or forcibly expelled from your jobs and homes, and you heard it discussed seriously and frequently by your neighbors, police officers, and elected officials--yeah, I think that might diminish your quality of life in some ways.