What that means is "only status quo opinion and politics". It's implicit support of the mainstream ethos of corporate America, one which has well established it

What that means is "only status quo opinion and politics". It's implicit support of the mainstream ethos of corporate America, one which has well established it values profits over people. Management works to serve those corporate interests, so it is in their interest to convey the message that the appropriate thing to do is be silent and comply.