Then comes USB-D, mostly backwards compatible with USB-C and USB-C++ with an adapter, but due to poor communication from its developers and just being a mostly improved USB-C connector rather than a groundbreaking invention, people lose interest in it. Then comes USB-Rust, with a plug looking like a hybrid between old proprietary plugs of the past and USB-C, while also dropping support for well loved features or making them really hard to use, in the name of variable and memory safety, a thing USB-D also supported optionally.