False doctrine is evil. It's telling lies about God. That's why we care about it. That's why we get bent out of shape about it, why we can't help but speak of it when we encounter it. We don't like it that people lie about God.
It's even worse that their lies twist the minds and hearts of Christ's little ones.
This is one reason, among many, that I am glad that I do not have to deal with a local "ministerium." When I served up in Chicagoland my senior pastor and I went to one. It was torture. Of course, it was a bunch of nice Midwesterners - everything was polite. But that was half the problem: all smiles and no mention of the numerous pachyderms in the room.
Worst of all, of course, was the presence of the Rev. Ladies. Deciding how to converse with them is not unlike deciding how to converse with someone who insists he is Napoleon Bonaparte. Do you play along and call him Field Marshal? Will he turn over the appetizer tray if you refuse? And he's wearing that hat! For reals?
I call them Ma'am.