I don't believe this, even for a second.
How are those that truly do question everything treated?
Well, as either looney conspiracy theorists, or vindicated activists, depending on when the official State narrative (or classification status) changes.
Not always, or even often unjustified, but I hardly think you can call it an "underlying axiom of western thought" with the extreme negative public sentiment towards it.
Nobody said it's without cost to hold non-consensus views. The point is that those costs are incurred by the marketplace of ideas itself (people being "mean" to you, not the state beheading you) and that, in the long run, correct views become the consensus through winning such competitions over and over again.
There are alternative regimes where incorrect views can reign indefinitely because they choose to prevent people from criticizing each others' views.