but but , but the liberals and liberaltarians which are really the same tell us that drugs should be legal and it causes no harm.
They refuse to acknowledge any harm because it does not fit their narrative. They get away with it because the harm is not always proximate in time to the event which triggered it.
To acknowledge a harm makes of them hypocrites, because their main reason for pushing libertarianism is because they like getting high.
They want a political philosophy that is consistent with their preferences, and if it is that, they do not care that it is inconsistent with the truth or the best interests of a society.