Apart from the comments explaining this is probably fake, I think the NJ hate that drove it comes from their populous, rich neighbors like NYC just doing a garden-(state-)variety "I hate poor/rural people."

It’s a “shop” if you mean it’s short for “photoshop”. It is not a real thing, only a joke. There would be no reason, we just have lighthearted rivalries between states.

My guess would be some sort of government service or charity whose funding is state related but is close to a border with another state.

They can probably serve out of state people but are not set up for it.

That, or New Jersey still has laughable IDs that are essentially laminated paper. The US is weirdly stuck in the past that way. Only recently have their IDs started to resemble ones from 30 years ago in Canada.