Does The Watchtower Teach Jehovah's Witnesses To Hate Apostates?

Yes. But some Jehovah’s Witnesses deny that there are any apostates on Y/A. They always say something like “Cheddar was never a member of a Jehovah’s Witness congregation.” So basically, just deny that apostates exist. Of course, most JWs themselves are apostates because they left their former religion and are now critical of that religion.