It was all for show, pure and simple. An earnings CC is a chance for sell side analysts and large investors to ask questions for clarification for their models, not for a hedge fund short to grandstand and embarrass the company.
Hedge funders meet with management behind closed doors all the time, he could have had a meeting face to face to ask his simple questions, instead he tried to embarrass the company on their earnings cc to somehow subtlety prove a point. Was rude and was bad form. He doesn't even have a position.