Sharing links that mock a caricature of the Other Side isn’t signaling that we’re somehow more informed. It signals that we’d rather be smug assholes than consider alternative views. It signals that we’d much rather show our friends that we’re like them, than try to understand those who are not.
I agree. But on the other hand, "mocking a caricature of the Other Side" is a description of satire, which seems to be a valuable way to spread ideas.