Sometimes the cost of associating oneself with a certain viewpoint is loss of employment. I could entirely understand someone distancing themselves from airing an unpopular viewpoint. If done responsibly, I see no problem with it. I still don't see that as so common a need that logging out and back in is a major pain from it. However, I refuse to blame a well-crafted tool for misuse of it by a person. Blame the person who misuses it, and not the maker of the tool.