That’s Kancel Kulture Klub thinking imho…
Choosing not to spend any time or effort listening to two people who have offered exactly nothing of value in their lives so far is not cancel culture, it's exercising basic critical faculties. They can spout off all they like, Brazile about her own self importance and Conway about whatever gibberish someone else has placed into her head, but I'm not interested in hearing about it.
It's funny that you're trying to pin that as "the JO tenet of decisiveness and polarization when it comes to ‘politics’" when they're coming from completely opposing sides of the aisle (ostensibly at least).
(BTW, I have a couple of times recently heard the phrase "cancel culture" rebranded as "consequence culture". I like that a lot more.)