Is the perpetrator of major shirk called a mushrik merely by the act, even if he was ignorant, an imitator, an interpreter, or mistaken?

Accusing a person of disbelief (kufr) or polytheism (shirk (definition)) is a serious matter, as it entails deeming their life and property permissible to take. The Prophet, peace and blessings be upon him, warned against declaring a Muslim a disbeliever, saying: "If a man says to his brother, 'O disbeliever,' then it has surely come back upon one of them." Issuing a judgment of disbelief is the prerogative of the Sharia (definition) judiciary, as it requires verification, the fulfillment of conditions, and the absence of impediments. A distinction must be made between judging an act as disbelief and judging the perpetrator as a disbeliever. An outwardly apparent act may be disbelief, but the perpetrator might have an impediment that prevents judging them as a disbeliever, such as ignorance or coercion. Therefore, a person is not called a polytheist merely because an act of shirk has originated from them.