Final answer:
Without more context, the specific nickname given to Edgar Allan Poe for his 'ruthless editorial opinions' cannot be determined, requiring additional historical information to provide an accurate answer.
Step-by-step explanation:
The question doesn't provide enough context to accurately determine the nickname given to Edgar Allan Poe for his editorial work. Poe was known for his literary criticism and gothic tales, not necessarily for 'ruthless editorial opinions.' However, because of his incisive and sometimes harsh criticism, it's possible he could have been referred to as something along the lines of 'a harsh critic' or 'the merciless reviewer.' To provide an accurate answer, additional historical context from Poe's life or work would be needed to determine the specific nickname referred to in the question.