As long as he doesn’t think he is the Lord’s agent and it’s his duty to implement, in the name of Jesus.
Most thinking Christians would have an issue with that.
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Well I’m a thinking Christian who has no issue whatsoever with what concerns you. Every Christian is the Lord’s agent, and every Christian has a duty to implement His teachings. So I certainly hope he realizes this and acts accordingly.
Most Christian don’t like the idea of a mortal man thinking he know how to implement God’s “solution” for the affairs of man.
I suspect, like most people, they would take up arms at the first sign of fallibility. Or deviation from their own doctrine.