He didn't completely ignore the claims. As he mentioned, the targeting specs may have been too broad. It's easy argue against the value of something so easily

He didn't completely ignore the claims. As he mentioned, the targeting specs may have been too broad. It's easy argue against the value of something so easily faked as a like, but we shouldn't forget that Facebook is also a large platform for promotional advertising, where "like-gated" promotions are designed primarily to collect users' email addresses.