rob anon here! it was a drunk ted talk back in 2015 and basically the talk segued into fandom and then segued more into "tinhatting" in the one direction fandom, and the harry het girl spearheaded it. and for everything she said, rob would counterpoint it with good ol' logic. like, he'd say something super objective and unbiased like "but /why/ do you think harry and louis have been separated for years?" and she'd be like "they hate the rumors!" and he'd be like "but why?" he was smart about it.