I’d argue that point highly.
I see no difference in the Sparrow and the worst of them, other than he doesn’t kill those who he needs to take out to claim their power, just locks them up and tortures them until they are broken, no different than Ramsay.. other than no murder and more subtle in his mental abuse and manipulations, but at the end of the day just as evil and self serving.
I see it differently.
Reminder your oppressors that they too are mortal and that they should have more respect for the working man, is no in of itself a bad thing.
The Church represents the best opportunity to rail in the excesses of the elites that the commons have. The alternatives are to hope for an eventual benevolent despot or start a doomed revolt.
The fact that some elites had to endure some mild discomfort that they regularly inflict on the commoners is part of the Sparrows tough love program.