They are CCS with a proprietary connector (well, soon to be SAE J3400), so it still means we (CCS1 cars) can’t use their chargers without an adapter, even if they let us.

It won't be proprietary. It is SAE J3400. It is CCS. That's why other manufacturers are willing to support it.

It's true that North America should have standardized a plug and charging standard a long time ago so drivers aren't in a situation where they have to waste money on adapters just to charge their car.

Europe has much better EV infrastructure today in part because manufacturers have been able to build to a common standard and have it work across all brands. That standardization has driven investment, development, and deployment.

It didn’t help that Tesla seemed to be much better at setting up charging infrastructure than VW. Electrify America is kind of a joke now, with busted chargers being the norm rather than the exception.