Having CCS on the car not quite the same thing as having to link up the clunky CHAdeMO adaptor though, or did I misunderstand your point?
My point was just about the physical connectors. Model S/X and Model 3 in USA all have the Tesla proprietary connector, with just two power pins shared for AC and DC. Model S/X in EU, while using the Type2 connector, are essentially the same - 4 pins now, but again shared for AC/DC.
Signalling pins are the same on both types of connector, used in standard J1772 mode for AC charging and a Tesla proprietary mode for Supercharging or with the CHAdeMO adapter. Recent cars have added the ability to do CCS-style signalling as a third mode on the signalling pins, but requiring a mechanical adapter on those cars to resolve the fact that CCS puts the DC power on separate pins.
Model 3 in EU is significantly different from all of these (including Model 3 US) as it has the standard CCS connector with separate pins for AC and DC. Tesla
could have chosen to add hardware in the car to switch the DC connection between the CCS pins (required for use at standard CCS chargers) and the AC pins (required for traditional supercharger and the EU CHAdeMO adapter), but this would have been expensive kit to add to every car - due to the high current, and due to the complexity of the safety interlocks (with an old-style supercharger or CHAdeMO adapter plugged into the top half of the connector, the CCS DC pins are exposed for the user to touch, so you'd better be really sure that they are isolated!).
Instead, Tesla took the view that the long term future for Europe is CCS and so it is better to modify ~3000 supercharger stalls now than to commit to fitting extra hardware to 100,000 cars this year and commit to doing so forever into the future.
Given that they leave out this switching capability from the car, the CHAdeMO adapter no longer works - it is delivering DC to the wrong pins on the connector. They could easily make it work by building a new version of the CHAdeMO adapter with no internal changes whatsoever, just fitting a different plug on the car end so that the DC is delivered to the right pins. However, since as we've discussed there are relatively few places with CHAdeMO that don't also have CCS, and that balance is only going to swing further in the CCS direction as time goes on, the sales prospects for that new CHAdeMO adapter would be very poor and so they probably can't justify the work.
