Copy/paste. We all do it, and don't try to pretend that you don't! It's especially useful for direct quotations, as the surest way of not screwing up. So, there's absolutely nothing wrong with copy/pasting—provided that you're not breaking copyright laws, that is.
BBC journalists strive for accuracy deadlines, and a little copy/pasting obviously helps them achieve that. Again, nothing wrong. But, I do get annoyed when they insert a tweet into an article, andcopy/paste its contents into the main text. This duplication is unnecessary; it wastes the readers' time and viewport space, particularly on mobile, and is utterly pointless. Embed the tweets, or quote them. Make a choice.
I believe that the journalists in these cases are just taking the piss. Whether or not they're using a bottle is another matter.