I do believe that code review culture ends up being a reflection of general company culture. In a healthy culture, visibility tends to spread the positive part of what's observable, whereas in a toxic culture visibility tends to spread the negative and political parts of what's observable.
And there's definitely a circularity here. In a healthy culture, code reviews tend not to be overly political in the first place, so it would stand out like a sore thumb if someone was causing a lot of unnecessary drama with their reviews. Likewise, in a toxic culture, code reviews may go from healthy to toxic and dramatic because developers have been incentivized to compete with one another in counterproductive ways.
