When you have multiple paragraphs in a quotation, each paragraph must start with a quote. Only the last paragraph in the quotation ends with a quote. Just pick up any book with dialogue in it and see for yourself. This is why I think your comment came across as you personally endorsing the official statement; it's not clear at first glance where the quote ends. The correct/incorrect placing of quotes is the kind of subtle thing that would lead someone to interpret one thing or the other without actually realizing what just happened.
Which writing style standard does that correspond to?
This is an internet discussion board with people from diverse backgrounds. Informal quotation style is common. Your comment is the first time I’ve seen someone assert that new paragraphs should start with a quote.