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Amazon knows EVERYTHING you do online, especially if you're attached to fakebook, twitter or instagram.
Here's your proof.
It's also hard evidence that this guy is a moron. If he had half a functional brain, he'd drop ALL social platforms and stop telling people his "likes" and "dislikes". I'm convinced - - people are totally and irredeemably stupid.
It's like quitting smoking - - you hafta just DO IT, just throw them away and never go back. It's the only way. Get rid of those damned finger-sliding phones and that would be step #1. Not hard, just do it. Unless you like being spied on at all times.