I'm certain the comment was ironic, emphasizing that there's a real possibility, if not probability, that Amazon has done this exact childish vindicative behavior on others, but we'd never know about it for those individuals lack the ability to reach millions at the tap of a button.

It's also another warning about just blindly sacrificing your privacy or other interests to a massive corporation. Because that massive corporation, like any entity, is made up of lots of people - plenty of them just as petty and immature, as any other person.