I think fascists see violating boundaries, hypocrisy, and telling lies as signs of power - ie, things to aspire to in their twisted minds. That's dangerous, and not how non-fascists think.
Mainstream traditional and social media have devolved to simply publishing verbatim what the fascists say without offering any kind of context or evaluation of, say, the truthfulness of the statement-now-headline.
I agree with you all around otherwise. I just don't think this behaviour rests on overconfidence or an appraisal of riskiness via the SC. I think it's psychologically must deeper, and recognizing this will help us deal with them better