That's the rub. Today on the internet, no one can validate that there exists any "trustworthy search". If we don't control the servers and validate the software on it, then we are taking someone's word for it. Most often that someone is a marketing person at the hosting organization. Occasionally it's a random comment on the internet behind a pseudonym we know nothing about.
People are becoming more and more, justifiably, cynical. And it's good for society that they are.