It's not insinuating if it was already stated by the person you're responding to. Notice also how in the example there is a question "Did you read the article?"

It's not insinuating if it was already stated by the person you're responding to. Notice also how in the example there is a question "Did you read the article?", in the comment you reply to there is also a question, but neither of them insinuates something (well, the second maybe insinuates that the user is doing something against the rules, but I can't really see any rule explicitly ruling that out)