fragility
The only issue i have with USB-C plugs is the fragility of the plug itself. They seem to bend/break at the slightest bit of pressure and i'm talking cables from "good" quality manufacturers here. I've been through more USB-C charging cables than i have lightning or previous iterations of USB. Unless they improve that aspect of the plug, is it really going to solve the issue of waste? People are just going to end up buying more cables as the plug is more easily breakable.