The problem is that they claim that anybody who tweets at them and uses their hashtag is entering into a contract agreement with the Walt Disney Corporation, which can be found at https://disneytermsofuse.com/ . This is ridiculous because nobody needs Disney's permission to use Twitter. If somebody were to use Twitter to express to Disney a desire to enter into a contract that might be valid, but Disney can't unilaterally declare that anybody who sends a communication to them over a given medium is unconditionally agreeing to be bound by their terms of use.