cherrybim, It seems to me that fails to account for basic human nature, which many of the tznius halachos are based upon.
Thi nk BIG, True, while things do change over the centuries, the root of the minhugim are still the same. And the MT is an old minhig that long predates chasidus.
Interestingly, (and in line with your comment) the Litvish Chasidim (i.e. Stolin and Chabad) use the litvishe havoro. I’m not aware of which if any non-Chasidim use the Chasidishe havoro, but would not be surprised to find that they do.