Collapse of "honor" as a publicly meaningful concept.
Now, there were negatives to the concept, and it always relied on a certain amount of public/private hypocrisy to maintain a high public image while hiding deviations from that standard, but it did mean that people who misled the public would voluntarily resign.
Shame worked. Unfortunately due to overuse, like antibiotics, the public sphere evolved shame-resistant personalities.
> The sorts of people who I would think ought to be at the forefront of any sort of positive reactionary movement seem to be bent on making sure that any sort of traditionalism is utterly and rightfully discredited
If they had anything positive to offer, they wouldn't be reactionaries.