https://meta.stackexchange.com/questions/104227/is-it-acceptable-to-add-a-duplicate-answer-to-several-questions/321254#321254

Answer:

If an answer answers the question, it should not be deleted, no matter if it was copied from another answer or not.

Instead, let users decide by themselves through up or downvotes which answer is best for them.

It is possible that a single answer is the best answer for two different questions, and that those questions are not duplicates, e.g. in the case of subset questions.

Only delete those answers if they infringe other deletion rules, e.g. not answering the question at all, self-promotion / spam, or illegal content, like would be done for any other answer.

Deleted by: ziz Shaikh, Robert Longson, Pierre.Vriens, GlorfindelMod, Helmar, hat.

Comment: A FAQ is always the wrong place to post an attempt to change current accepted policy. –
Nathan Tuggy

Ciro's reply: @NathanTuggy ah OK, I didn't know about FAQs. So should I just open another duplicate question without the FAQ tag? I think it would just make more noise, I'd rather let people vote in one single point of information