These jacks come from, not the 20th century, but the 19th century! It boggles my mind how something we've have had since the 1880s is suddenly obsolete. There's

These jacks come from, not the 20th century, but the 19th century! It boggles my mind how something we've have had since the 1880s is suddenly obsolete. There's a plethora of devices in existence manufactured over a span of decades that all interchangeably work together, and we toss it now out for what? Do we really believe that all devices for the next 130 years will work on the same bluetooth protocol?