If random electron apps is not connecting to the entire internet, loading completely random code from any website in the world, not they don't.

Before USB4, USB came with DMA. If your sandbox has ever an exploit, that's close to instant rooting capabilities exposed to the entire web.

USBC an hold a ton of power. One sandbox exploit, and the entire web can fry your machine.

This is too dangerous of a capability to be exposed to a public network with tons of malicious actors and bots.