The basic evil by men in this world is original sin, not every instance of evil proves that Satan is involved. Surely Satan would be involved in counterfeit churches where they used to burn women accused of witchcraft.
Criticism of someone prophesying Christianity may be wrong-headed, but it doesn't mean it comes from Satan.
Besides, we are supposed to question - consider Gideon questioning the Arch Angel (Judges 6:13), "If the LORD be with us, why then is all this befallen us? and where be all his miracles which our fathers told us of..."
‘Criticism of someone prophesying Christianity may be wrong-headed, but it doesn’t mean it comes from Satan.’
That is a very good point. People do become misguided at times, but it doesn’t mean they’re in direct league with Satan. Sometimes people are just in a learning process. Paul didn’t say everyone doing wrong was a child of Satan. He said this:
Galatians 6:1
‘Brethren, even if anyone is caught in any trespass, you who are spiritual, restore such a one in a spirit of gentleness; each one looking to yourself, so that you too will not be tempted.’