You seem to believe that communists are forbidden from supporting non-communist things. (I'm not sure demagogue was the right word choice for this. Maybe dogmatist or cultist fits better)

No, but vocally supporting the polar opposite of communism is a strange position for communists to take. (You are correct that demogogue nonsensical word to use, and you used it several times. It's hard to take someone seriously when they clearly don't know what point they are even trying to make).

Not only that, you demand communists to stop supporting all non-communist things. Both of these things show your complete maleducation regarding communism.

When did I do that? I've been a socialist for decades, it just annoys me when little kids cosplaying as soviets act like they're the only ones that understand communism, while demonstrating they don't even know the definitions of the words they are using.