Are not Jehovah and Christ Jesus the bench marks here as to what is to be believed and acted upon ? And not what some humans who later down the track claim to be their followers and misinterpret their words ?
Do Christians and Bible believers actually believe what the Bible actually says or do they believe in what imperfect humans say the scriptures mean and not what the scriptures actually say ?
It does not matter two hoots what later Bible writers say or not say about shunning what matters and what counts is how Jehovah God and Christ Jesus acted towards Satan the chief instigator against Jehovah God and neither of them shunned him in what will be at least 7000 years of human history at least.