Why stop there? HDMI supports 1536kHz audio -- plenty to capture WLW's AM broadcast at 700KHz alongside the entire spectrum below it. :)

But even here in these comments, they're not arguing that 192kHz is insufficient. I haven't seen anyone ever make that argument, actually, so from my perspective this sampling rate represents a useful amount of overkill.

The extra data is a very small price to pay for silence.