The very last sentence: It's the whole thing about living in a common space where everyone has to share and it's difficult at times but we got through it, we'r

The very last sentence: It's the whole thing about living in a common space where everyone has to share and it's difficult at times but we got through it, we're on the other side now. was the only mention of personal friction. I admit that I might be over analyzing here, but it's such a strange cultural thing that we can't talk about anything except the most positive emotions when dealing with other people. Why is anger, hostility, annoyance，etc. so taboo to mention in public?