Of course there are always some manipulations with a cryptocurrency. People are doing everything for their own convenience and income. It is understandable but might be confusing to other users, traders as it is hard to understand if the information is trustworthy or it was just the part of the manipulation game.
You are fully right. Manipulations with information are most income. In internet you can do this very easely - you have a giantic auditoria. Most people usually use for info - blogs and tweets.