I work in an office where there are a few woman working, they have their own interactions going on between them. The men don’t interact with them or party together which is the way it should be. When business is involved, we do talk. But that doesn’t mean that when they leave they shouldn’t say bye or when coming say good morning. The good morning / good evening is not directed at anyone specific but to the general air which is fine. In conclusion, I feel that over interaction can be limited but that doesn’t mean not saying hi or bye when coming and leaving. It makes the atmosphere a good one. And if i did understand you correct the interaction was “a little more” that just saying hi or bye or work related. I do know someone who left her job because of that and good for her. A person never losses anything from doing the right thing.
Regarding other work places, it is very tough to find the right atmosphere but they do exist (Baruch Hashem I am in such an office which is amazing and local)