This answer addresses the broader question you asked about questions with political entanglement. The question you linked to has other issues unrelated to politics; I'm only addressing the "politics" part.
Most people don't routinely look at edit histories and can't see deleted posts. The current version of the question is not about specific political positions, only the existence of a political difference. Any answers that have already gotten into the specific political issues (and aren't deleted) can be edited; any new answers (or comments) that go there are escalating and should be dealt with appropriately.
In the workplace (and The Workplace) we sometimes have to deal with sensitive issues. The answer isn't to bar all such questions; it's to make sure they stay focused on the workplace problem, not the political or religious or gender or... issue.
Questions related to religious apparel, mental disabilities, gender fluidity or transition, charity fund-raising, political campaigning, etc are welcome if about the workplace and not about the religion, illness, gender, charity, political position, etc. These are hot-button topics for many; in the interests of maintaining a polite and professional site, people who have seen comments, answers, and edits that are no longer present should strive to set that knowledge aside and focus on the question as it stands. And if you see people trying to go there (again), don't take the bait -- flag, defuse if you think you can, and move on.