The proprietary chargers were expensive and disintegrate within a couple of years. Also scavenging the office for someone with the right version, and wattage of charger when you left yours at home.

No thanks.

USB-C should become a standard, so they'll be ubiquitous, cheap, etc.

If you need a safe cable you can get magnetically-connected USB-C cables.

The MBP still has a headphone jack, as far as I'm aware.