At least they didnt adopt the burning at the stake doctrine as well.
They did; they're just waiting for the Great Tribulation, when government power crumbles, to use it with impunity. DFing, "marking", "public reproof", back-room mock trials, etc. are all the precursors. When the governments stopped supporting the Catholic Church in their Inquisitions and actually stood in the way, they stopped. The Salem witch trials are an indication of what happens without a stable government to intercede on behalf of the individual. You can look at what goes in the Middle East for a snapshot of things to come, from "God's organization".