For me personally, I wouldn't consider it worth the risk. You still have to make an Amazon account, hand over your personal information, let their cameras onto your network (of course, you can VLAN them) and.. how many people are gonna do this to make it effective?
It just seems playing right into their hands, I'd rather outright boycott anything Amazon (I understand easier for some than others) than waste my time, money and effort into protecting my personal info against a user hostile company.