The article and the headset are not about media input, although Bose would like to make it look that way. Part of their campaign for the Bose X. The Feds have no problem with it, just a concern over battery power. Where they get that paranoia, no one knows.
There are many ways to put "entertainment" in the cockpit: ADF, newspapers, inputting through a jack in the cockpit, earbuds, etc. Media and phone inputs on headsets are showing up in a number of new headsets. We shouldn't blame a device for poor judgement.
Singling out a single product to blame doesn't make sense, either. I don't blame USA Today for pilots reading newspapers in the cockpit. I don't blame Rush for pilots listening to the ADF.
Mike