Break out the tin foil. I've used cables that didn't come with the devices for decades, never a problem. The iPhone is no different. Apple loves customers like you because they can sell you a $3 cable for $20
As have I, but I had never seen a standard iPhone 30pin cable with a chip like that in it.
As I said, I don't know what the chip does at this point, and I am not willing to risk it.
I needed cables straight away, so buying knockoffs from China, waiting two weeks for shipping and have them possibly not work or be dangerous was not an option for me.
I will probably buy a third party one down the line, provided I know it works properly.
When we're talking about a $1000AUD device, saving $20 hardly seems worth the risk.