Of course we know! Apple doesn’t want to have a notch at all, but it’s a necessary design compromise. Just as the bezels were before. 10 years of bezels, 10 years of notch. By then an entirely new technology will make the notch redundant.
How do you know?
I don't think they did the notch on purpose. Once technology gets to the point that the cameras are built into the frame of the phone not part of the display all phones will be going this route.
Its just a matter of time.
They didn't do this to be "iconic" they did it because they don't have the ability to eliminate it "YET"
The apple logo on the back is all they need to stand out.