Like mentality is judging the quality of something solely by how popular it is, by how many likes, favs, up-votes, and claps. This is extremely dangerous. The end result has been portrayed in The Orville and other dystopian visions of a future none of us want.
No matter how many people repost a false quote it will never become true, until it does. In fact, this is how urban legends, myths, and entire religions get started. From the burning collective desire for something to be true that just objectively is not.