I grant that sane behaviors may not always be successful at toxic companies. That seems true by definition. But I don't think general career advice should be based on what is (temporarily) safe at the bottom decile.

Also, if you go back you'll note that I didn't suggest that people "tell the truth". I suggested people ask a neutral question about an obvious phenomenon. If it's unsafe to give an honest answer, most people won't, so it'll be a short discussion. But if it's a topic with some room, it can be the start of a good conversation and possibly a useful change.