Does anyone have some research links on analysts/opinion leaders and their hype cycles? I remember Nouriel Roubini bashing Gold on Twitter like never before al

Does anyone have some research links on analysts/opinion leaders and their hype cycles? I remember Nouriel Roubini bashing Gold on Twitter like never before all of the sudden starting about two weeks before the gold "crash". The whole thing happened without any significant "new" developments taking place (at least from my laymen perspective). These boom and burst cycles seem a lot like echo-chamber hyping. I would so love to see some research on how these echo waves start and succeed/fail.