If R' Schneur Zalman of Liadi had long Peoth, as in this famous sketch, why is it not the custom in Lubavitch circles these days for adult men to maintain long, emphasized Peoth as it is in many other Hasidic groups?
(Of course this is not strictly a Hasidic custom; there are many others who grow out their Peoth. I'm just comparing the practice of one Hasidic group against, it seems, nearly all the others.)