Many would argue that the "highly educated, clerical class" of those times represented a rigidly traditional society that punished any who deviated slightly from their norms.
Burning of people only happened in some parts of the world for some time. Religion is much more widespread phenomenon.
So it's hard to argue that one is a need of the other?
moderately educated, owning class: these can afford (at least some privacy for) their deviations, but in order to administer the economies which support their lifestyle, have need of the
highly educated, clerical class: these (having been deputised some power) must conform, lest they be rusticated into the
poorly educated, working class: these again get to deviate (because who cares); they've never ever been, and they're never ever going to be, any danger to the owning class.
But of course this tripartite division only holds true in Oceania (and Eastasia, and Eurasia); it clearly wouldn't in any actual earthly polities, right?
Post-republican China: self-punishment as first resort
Current-day North Korea: traditional society