Sourcing it is fine. The rule indicates that the user in question is passing it off as their own. Citing a source ≠ plagiarism (unless there's improper citing).
Yes some source is have their own bases to give a merit for a user. Reading and answering the other users problem is a base to recieve and give some merits to others in need. But copy pasting information from other it is not a good base to recieve a merit.