that taboo is part of the problem, but the reason it could be introduced was due to the successful instalment of the collective emotion of guilt.
If ye can make a population feel guilty, ye can make them accept a situation that is suboptimal to themselves, such as active discrimination against them (example US affirmative action).
It is in the same family as rule though fear, which is what covid is all about.
The concept of ruling though fear is not to make people afraid of their government as some think, but rather to make them afraid of something external that they then run to the government for protection. Ideally this external threat that causes fear should be imaginary so that it can't be defeated, or cause a legitimate threat to the government.
But it is the same reason for why I have said that all emotions should be ignored when it comes to decision making as they always leads us astray and distract us from the most rational and logical cause of action, and leads to infringement on our most sacredly held principles.