So what.
So what.
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That is controlled as in controlled by the government. If you sell things the government controls, then you follow the government rules.
There examples you gave like vegan place selling meat. Well meat is not a controlled substance. There are health regulations but the government does not tell them who they can or can not sell to like a pharmacy. It is just hypocritical for a pharmacy to complain about government interference when its whole existence depends on government intervention.