Universal I/O audio sockets are a great idea - no more fumbling around, let the sound card automatically detect if its an input or output. But any convenience is also future security vulnerability.
The principles of what they're doing is very straightforward. Would be very surprised if it hasn't been in widespread use for some time by those who hide behind acronyms. Should be possible with most modern audio processors, not just Realtek. Only those with truly hardwired inputs & outputs would be immune.