If you don't want to listen, I can't force you, but what's the point of poisoning the discussion so the people who do want to listen, like me, don't get a chanc

If you don't want to listen, I can't force you, but what's the point of poisoning the discussion so the people who do want to listen, like me, don't get a chance to? How can you even say their viewpoints are "shit" if you don't know what they are, what the nuance is, the context. Is that opinion informed, or is it from out-of-context snappy soundbites repeated from your filter bubble?