Why you wearing your iPhone 4 around your neck like a medallion and carrying on conversations with people on it?
I know when the original iPhone came out that people did actually ask if that was an iPhone, but I have a hard time believing the average person could tell an iPhone from a 3G from a 3GS from a iPhone 4 and then be bothered to ask about it.
Your tale of woe just does not ring true.
And it doesn't matter anyways, if it works for you it works for you. Grow some balls.
If I were to get on here and lie, it would not be about this.
The other day, I was just standing there holding my iPhone 4 (not necessarily out in the open for everyone to see) and the register guy at Best Buy asks me if it's the new iPhone, and then 20 minutes later, I went through the same conversation with my dentist.
People do notice it. My case leaves an open space for the new volume buttons, so you can tell right there that it's the new one. People do notice it and do ask about it.