I still don’t get why this whole concept of the superposition exists. Like, yeah, if you don’t measure something, you don’t know what it’s like. This isn’t new.

The only new aspect at the quantum level is that you cannot measure without (non-neglible) impact on the thing that you’re measuring, because our usual method of measuring involves blasting it with quanta (photons).
That means some of our usual science concepts don’t work anymore, like measuring something, then changing it in some way and then measuring again.

But just telling people precisely what I just said, feels so much simpler than raving on about how we should call the state of “we haven’t looked at it yet”.

Didn’t Schrödinger initially make that thought experiment to show how ridiculous the notion of superposition is because he disagreed with the theory?