Earlier quoted context omitted.
First your anecdotes are not persuasive compared to two incredibly successful companies and one incredibly successful industry. Second, you missed the point. It isn't about prohibiting anyone from expressing a negative opinion or sugar-coating things. That's a false dichotomy. It's about not attacking the messenger and not looking to place blame. It also means accepting valid criticism. You can be 100% honest without…
The problem is that many people who are hurt easily by cynical and sarcastic behavior(which is very different than being as asshole) typically take themselves very seriously and it's a sign that they are very self focused and place their own concerns way above those of the team. I wonder if there is a language barrier but cynical and sarcastic is very very different from putting people down.
Please give evidence supporting that claim. What I've seen is a lot of people are just non-confrontational by nature. They'll do a lot to avoid being in a fight. However, they may want to discuss things even with criticisms. It just becomes harmful to them after the conversational style crosses a certain line. Knowing this, groups like Toyota put a line down that allows the negative information to come in without the personal attacks or circumstances that shut many people down. Continuous innovations resulted that dwarfed the competition doing what you suggest. This is not an isolated incident as many innovative companies create similarly respectful environments where everyone tries to improve, either positively or negatively, the process or products without attacking each other.