I'm not talking about criticisms of a particular company when it's the one being discussed. Should Theranos be criticized for their own failings? Yes. Should every U.S. startup be suspected of being similar because of another company's actions because in a population of 300M, someone else did a thing? You tell me...
Secondly, when one company gets away with something in the US, we have a fairly good reason to believe that other companies could get away with something similar. So, if I were a person in any country (even the US), and I needed to decide whether or not I could trust a US company not to do something to me, legal precedent in the US would actually be very relevant.
To make this concrete, I bet Europeans have become rightfully wary by now about the data privacy implications of banking/shopping or otherwise making an account with US business.
We're not talking about well-thought-out questions about legal precedence, but random trolls calling their products 'cheap Chinese knock-offs' even when they are original, and even in cases where it's a similar version to something, if it's made in the U.S.A., we call that "private label" or "white label." Or "generics."