It probably depends on the measure used to define peak, but the removal of arbitrary limits on honest intellectual inquiry has huge benefits, eg the enlightenment, science, etc.
My impression was that that taboo first got a firm foothold a couple of hundred years later, after the second world war showed what industrialised genocide looks like. How could the fundamental equality of all humans otherwise have been accepted as true and taboo to talk about at the same time as women being denied suffrage until the early 19-hundreds, or eugenics being openly discussed well into the 1930ies?
