[gumby]

I only remember a couple of gross violations, both in the early days: apple macbook charger and the Nintendo switch.

I think things have quieted down since. Of course that is due to the limited choice in chipsets (cartel? Or just bc nobody wants to design a complex, low margin part?). But nowadays dodgy mfrs can compete on who can electrocute or set alight the customer to save a couple of pennies, but the protocol conformance will be outsourced.