Bari Weiss is bringing politics into her behavior- she was tweeting insults about her own co workers during a meeting about the journalistic direction of the company she is participating in the journalistic direction of. If this came from anyone else she'd be fired immediately.
The New Guard has a different worldview, one articulated best by @JonHaidt and @glukianoff. They call it "safetyism," in which the right of people to feel emotionally and psychologically safe trumps what were previously considered core liberal values, like free speech.