Josh R, to save the moderators from posting a note, which they are reluctant to do, “conspiracy theorist” and “antivaxxer” are not imputation of motive, they are description of position, like “left wing” and “right wing”. An example of imputation of motive would be if I were to insinuate that you’re an employee of a foreign government agency, working from a boiler room of trolls trying to maximise the death rate in countries your government officially deems to be their enemies.