Funny post, but let's be logical, Captain....
What you have described (small numbers, yes) is an effect that powers the snowball effect. Let's call it dilithium crystallization, shall we?
If you pin images, your images *can* be seen whether you are a featured pinner or not. And if people like your pins, they might follow you. Or......
they might even be using Social Multiplier to find users to follow.............
But....with Social Multiplier you will end up with followers and therefore traffic for free. If you only got followers from the people you follow, the numbers might stay low.
You can also get followers when people see pins you pin and ------ drumroll please ------ any pins of yours that other people have pinned/repinned/liked.
You can think of it as MLM if you like. If you sign up 3 friends (you have got 3 friends, right? I haven't so I never got into MLM) and each of those signs up 3 friends, you'll have a network of a gazillion in a month.
I'm joking a bit there, of course, but the principle is kind of the same.
Anyone who pins your pin is exposing that pin to all the people they reach. Of those, if a few also pin your pins that reaches even more new people.
Snowball effect. Also known as the multiverse. Your pins can exist in multiple realities all at the same time.....the possible number of pins reaching people you can't (on your own) can be HUGE. And best of all it diversifies the pinning to your site(s) across a large number of users - making it safer than trying to pin that same number of pins all by yourself.
And it could start before you've ever followed anyone. Whether those 2 followers are, shall we say, genuine Pinterest people or other marketers trying to entice people to follow them, who knows?