No sir, he wrote some post for me which was not used anywhere in any place just like some one write writing article for you. I don't think it will be refer to pilgirarism
Your account is also used as a poster of the results of spinning tools and AI that the main suspect did. If this uses the analogy of solving a criminal case, your account will also be confiscated by the authorities as evidence regardless it doesn't belong to the suspect. This means that your account should also receive the same consequences, just hope it won't happen.