She faced concequences for her actions as an employee, not as an activist of peace. Offensive language as an employee, especially when directed at the customer, usually gets you fired.

She wasn't whistle blowing/revealing any inside information. She wasn't adding anything to the topic of the conversation. She publicly made a rude personal comment at a conference from a platform which connects the company with its current and prospective customers. I'm surprised the company dragged this for so long. If this was a waiter at a restaurant saying "fuck you" to this guy while eating there, I'm sure they wouldn't even have had a chance to finish their shift.