If during the recent pandemic we were able to see many, many groups of people mutually driving each other into hysterics of hygiene theater, to the point of doi

If during the recent pandemic we were able to see many, many groups of people mutually driving each other into hysterics of hygiene theater, to the point of doing utterly pointless and irrational things beyond the scope of anything scientific or practical, something like the dancing plague of 1518 (assuming it was a case of group hysteria and not something else), doesn't at all surprise.