If Hivewatchers is wrong and the content actually belongs to the individual we edit the comment and otherwise clarify. This is very, very rare and always amicably resolved.

My point to you is people are looking to you for legal advice. They believe you to be an authority. When you tell them something, they believe you. You are telling them that all finds of suspected plagiarism are false accusations and illegal. And now, with the latest trend of outrage, that downvotes are illegal. This is how normal people interpret this. It is clearly false.

In this case, you gave said advice without even checking that the information is correct. The OP did his best with the post with good intentions but much of it is incorrect. Whereas anyone else responded I wouldn't have said anything. But you're responding as an authority on the matter to incorrect information and in a highly non-objective way.