These are mental health preserving and physical health preserving until they are not.
Nobody wants to hear that if you don't do something bad things are going to happen and nobody in power, such as mods, wants to have their power challenged or use it to threaten others in power because it is going to make them uncomfortable or their lives harder.
What you are seeing is how Nazi Germany happened. Not this specific thing, but this behavior scaled over an entire population. People with empathy and others subjected to stress enter a state of grief, and the first stages of grief are shock (disbelief) and denial (not asking questions you know the answer to because the answer is too awful to bear), people tell them they are overreacting or that they are "too political." "Protest somewhere else" is a common sentiment for anyone inconvenienced by those who feel unjustly treated, and only once they personally experience harm do they start to change their mind.
It is flagged because most people want to be comfortable, and hearing uncomfortable things in comfortable spaces is something they don't want to tolerate, even if it threatens the existence of their comfortable spaces in the long term because curiosity is not compatible with authority and authoritarianism.