This isn’t a great example because, on the ‘other side', car chargers also have different size cables between the ‘charger’ (EVSE) and the car, with the same plug used on them all (especially with NACS, which doesn’t even differentiate between AC and DC plugs). They rely on negotiation to tell the car how much power it can draw. No-one complains about this.
Adding connectors to obstruct functionality, to make each specific use physically incompatible with every other use, was hell. No thanks.
Usb-c rocks, it's flexibility is amazing, and anytime you need a serious business use, good cables are well labelled. This is just yet another HN lightning rod issue where all the very narrowly intolerant particular people come out in hordes, but it's just not really an issue. And everyone else is living much more happily.
Unfortunately, many not-good cables are also labeled similarly as good cables (fraudulently).
They largely do. I’m not sure I understand your point? The amount of current pulled by the car in an EV is dictated by the car (equivalent to the PD controller on USB-C) and the amount of current max is indicated by the EVSE (which, is sort of like an emarker). When you plug that EVSE into the wall, there is absolutely nothing telling it how much current it can pull.
The standardization of the receptacles tells how much current is safe to pull. "This receptacle is 50A rated and can supply 40A continuous" is given by the 14-50 receptacle shape.