Imagine If we All lined up when it suited us...!
Dublin ATC were only doing their job here, the Flight Crew were not doing their by stalling the process for Line up. Imagine if all pilots around the world used this same bad habit........? The problem with this Bad Habit is that they have done it before and got away with it, this time it has been "Highlighted".
Wether you like the ATC's tone or not is your own option, dont confuse the topic here, ATC were using assertive communication, clearly the F/O struggled with his "Stalling RT Work" whilst lining up, the Captain felt the need to intervene, this only CONFIRMS that they were "NOT READY".......!