They get into that popular (and populist) current pastime of painting institutions as inherently bad, where the Sparrows are concerned. They depict them as so anal about their beliefs and practices that they put the power and legacy of this movement ahead of the welfare of individuals.
Although to be fair, building and protecting legacy is the motivation of most of the major characters in GoT - Tywin Lannister even spells this out in the TV series.
The idea behind the Sparrows is likely inspired by the Cathars and various heretical pre-Reformation movements which championed ascetic life ahead of the opulent trappings of the elite (both churchmen and nobility) in medieval society. As with what actually happened in the past, this upsets the whole applecart of social order where the upper orders were traditionally seen as refined and superior, elevating the devout and not necessarily wealthy or noble in status and power.
You could assume that people were too afraid after the destruction of the Sept of Baelor to oppose Circe. What they actually practised in their own homes in private isn't part of the plot.
Although to be fair, building and protecting legacy is the motivation of most of the major characters in GoT - Tywin Lannister even spells this out in the TV series.
The idea behind the Sparrows is likely inspired by the Cathars and various heretical pre-Reformation movements which championed ascetic life ahead of the opulent trappings of the elite (both churchmen and nobility) in medieval society. As with what actually happened in the past, this upsets the whole applecart of social order where the upper orders were traditionally seen as refined and superior, elevating the devout and not necessarily wealthy or noble in status and power.
You could assume that people were too afraid after the destruction of the Sept of Baelor to oppose Circe. What they actually practised in their own homes in private isn't part of the plot.