[jiuahweruihawi]

Have they banned the discussion of certain topics entirely? Or have they just said that they don't want the company as an entity to get involved with these topics?

There's a difference between saying "we don't think it's appropriate for us to take an official stance on X, but feel free to discuss X on your lunch breaks like you would any other topic" and "thou shalt not mention X in any context while an employee of this company"