That is not an apt analogy at all and frankly I wish people would stop going out of their way to analogize things. The Internet has been around for a while now, so we should be able to see things, or at least discuss them, for what they are.
[1] And that's the value of analogies--not just to help us understand things that are novel in terms of the familiar, but to help us think about how things are similar or different, which helps us cut to the heart of why we think about a thing in a particular way.
Pictures do not passively "leak" online. Someone goes to the trouble of posting them. If that person didn't have permission to do so, they are the guilty party, not some random person who happens to see the picture, not even knowing who that picture is of.
This is the same as if the peeping tom snapped photos, and then shared them. You're not automatically a wrongdoer just because you see such a thing.
Pictures leaked before we had the Internet. Hello? We had scandals revolving around leaked photographs of famous people decades prior. Paparazzi also existed long before the Internet.