While I agree that a MagSafe-style equivalent would be nice, it will be a giant step backward if we end up with a gazillion new "standards." Or a de facto standard with a poor mechanical connector (e.g., micro USB). Or a great mechanical connector that's completely proprietary (Lightning).
Bluetooth headsets are not really a solution for the reasons mentioned in the article. Even with voice codecs there's lossy recompression going on, and music is worse. Add the delightful user experience of batteries, and you've managed to replace a light, decent-sounding, completely-reliable $15 set of earbuds with something heavier, lower-fidelity, always in need of charging, and more expensive. All for the sake of removing a wire.