You only classify that kind of information if you are trying to hide it's very existence because the knowledge of it's existence could cause damage to the nation. There are situations where this applies but this is not one of them. Q Anon is common knowledge and knowing if the CIA has any information about Q Anon would not cause any potential damage to the nation. They are lying to you as a cheap cop-out. Keep in mind it is illegal to over classify information for the purpose of hiding that information. You could file a criminal case over this.