It would be a big deal if they had a wire you usually transmit at 6ms with, but they found a way of doing the same distance but 3ms. But no, they literally brute forced their way through a mountain to make the distance shorter, because they had the money to do it and want more.

Being able to spend money on a operation to make the cable distance shorter is hardly a very big deal for anyone else but nature and the company doing it.