I not twisting your words. If it reads that way I apologise. I am simply asking questions to understand why would anyone prefer to use I2S?
PCs are not shipped with a card that has an HDMI connector that sends data via LVDS/I2S. You have to buy a specific card, a relatively expensive one, in order to have that connection. (There is no I2S bridge PCI card displayed on Amazon UK in the first three pages. It is that rare!) Besides, a standard audiophile would not necessarily have the knowledge to find and install an internal card. So it's not exactly like I'm plugging a cable is it?
So I repeat my question: what is the benefit of I2S compared to a USB connection, which standard on every computer?
You may have missed it, I'm using USB. It's also far from expensive. The Xing Audio USB to i2s Board costs around € 60, the i2s to HDMI (LVDS) is around € 15-20. With a CD player you only need the i2s to HDMI (LVDS) board to pick up the i2s signal.
As I said, it's the best solution for me so far. That doesn't have to apply to anyone else.
But to answer your real question.
If I have a source device (DAP, CD player, streamer) that outputs an i2s (LVDS) signal without a detour (even without USB) that the DAC chip can process directly as a normal i2s signal, why should I use that in change anything else? It will definitely not get any better. And it has to be changed back again. In addition, the data is transmitted differentially, how could that be better?
There is actually an expensive i2s card for the PC, but since I don't have a PC, I cannot use this card at the moment. If the connection is USB based, it would make no sense.