The biggest reason people block other people’s views and want to stay ‘safe’ inside their bubble of others who think the same, is they are scared of being wrong. Fear of their opinion being invalidated and their ego can’t suffer that.
Right or wrong like opinions are made so by the individual and collective mind and then defended literally to death sometimes by the ego.
They are after all just an opinion and nothing to fear. A temporary mental form that is thought, an opinion, and if we accept that is all they are and are not attached to our own, then there is no fear. Being right or wrong just doesn’t matter except to the story of ‘little me’ playing out in our minds.