LorettaG,
Let's keep this a friendly board.
In response to hypothetically answering the phone in the manner you described, the FAs were not wearing buttons during the flight. They were not advocating getting off the plane or suggesting their company should not be used.
A bumper sticker on their bags in my mind is similar to a bumper sticker on my car. Would I drive up to a client site with "get screwed by MyCompany" - no. But that's not what they did either. They got us - the endusers - discussing their plight.
I'm sorry you disagreed so strongly, but I'm glad we're allowed to.
Thumper