The L3 EV charging setup dumps 200-900 volt at up to 100 amps into the car. People charge their car in the rain.

I don't want an adapter that makes Big Clive say "oh, that's even better. That's very interesting."

The charging networks are "banning" them:

https://insideevs.com/news/682634/electrify-america-evgo-ban...

So if anything goes wrong, you're probably in a worse position from a liability/compensation standpoint.

Not the parent. You could be passing 150kW or more through an adapter. I think it’s a very bad idea to risk your life/car/safety on a non-approved adapter.

Might void your warranty and there’s no guarantee on quality for components. There’s a lot of juice flowing across it.