If Apple would ask its customers to bind an empty foodcan on their ears to better appreciate sound quality without that foodcan later, some would do it.Yours is a good point. While BT still can’t transmit a bit rate necessary for hifi music file types, many people have hearing damage from exposure, and loss from aging. They can’t experience and appreciate the live effect of a faithful recording.
Even with healthy ears, a jack and capable headphones aren’t sufficient by themselves to deliver hifi. The codec and DAC have to be capable. The DACs in phones are understandably unimpressive. Their abilities are sufficient for the highly compressed audio codecs that allow streaming or conserve storage space.
The fact is, smartphones are a compromise in everything they do. We excuse them because of their convienence. If you expect more, you have to consider solutions that specialize.
Today’s 64bit devices have no storage space, processing, cpu time, or DAC quality limits. It’s all framed by those that want to sell Bluetooth solutions for $$.