The opposite of "contempt culture" is bad too. It's an environment where negative feedback is considered unhelpful by definition, everyone has to be fake-nice,

The opposite of "contempt culture" is bad too. It's an environment where negative feedback is considered unhelpful by definition, everyone has to be fake-nice, no one ever says what they think and so on. Yours may differ but my experience is that this (the opposite of "contempt culture") is a much more common situation.