Yes, he was a beta tester on a game he never posted an article on.
Except his RPS story 'admission quest' that features her game at the top of the article and his kotaku piece on GAME_JAM. But yeah it is about ethics
Yes but it was also proven later that he was a beta tester for that game. His name was in the credits and the creator even acknowledges that he was a beta tester. It is still an ethical issue which he should have disclosed