Plagiarism (though a no-go) is one thing and I don't want to imply that all those mentioned are your accounts either, maybe you really were just the "guide".
What I find much worse is being a "turncoat": On the one hand you write stupid assessments to users (with hope) as moderator under their posts (free of plagiarism ✅ or "name all sources when using foreign content" ❌ ), on the other hand you do the same. Trust is the key word here, which you have trampled on by your behaviour.
Moreover, you do not mention at all that your "pupils" have received a conspicuously large number of sc- and booming-votes due to your intervention. Others can only dream of that. Is that fair? And here again it is trust that you trample on. This time not only the trust of the users, but also of the Steemit and Booming team. Because people rely on "their curators" to act loyally.