That's not my impression. Tesla's advice about higher power for level 2 was heard, so I don't think SAE ignores Tesla's advice. It's just CCS wasn't going to be ready before the Model S came out (SAE only decided not to go with CHAdeMO for their standard in March 2012, Tesla started Model S delivery in June 2012).
Yes it was heard, after Tesla already gave up. And I agree, CCS was not ready but if Tesla felt like CCS was actually half decent, even in preliminary specs. Tesla could have easily worked something out. It is not uncommon for draft specifications to be used by manufacturers. Fact of the matter is, even if CCS was ready beack then I doubt Tesla would use it. they will of course make an adapter for it most likely.
So what? Complying with regulation is the cost of doing business. People here never complain when Tesla receives huge income from Californian regulation (not least through the dubious battery swapping rule), yet the very moment Tesla is requested to comply with less favourable regulation it's a big issue all of a sudden. Comply with the regulation or kindly take your business elsewhere.
Let us remember the options that California gives.
1 - You can make EVs
2 - You can buy ZEV credits
3 - You can pay the penalty fees
They have 3 options to chose from! Here Tesla gets an ultimatum. But lets clarify my position, I am not complaining about the regulation if you read my comment, actually your california example actually proves my overall point. I am saying Tesla should do the same thing that other auto manufacturers do in California. Make compliance adapters. To the point where no EV will bother using the CCS adaptors at the superchargers because it would be impractical.
The big question is can the Tesla connector do Vehicle to grid as well as CCS? It seems possible with both AC and DC pins CCS maybe be able to DC charge from solar/dc_converter and be grid tied at the same time. I would like Tesla to also enable vehicle to vehicle charging. Tesla (JB) has said vehicle to grid is still far off since no one will want their batteries "used" and degraded, but with next gen solid state cells that barely degrade, it will be stupid to have a 200kwh P200D or whatever not connected to the grid to do useful work when you wont be using it.
It does seem Tesla will be screwed in the near term but it is not their fault as CCS doesnt have the speed they need.
Why in the world would it matter if a DC adapter can do vehicle to grid? Vehicle to grid works best at destination charging. On Level 2 chargers. You are not going to be doing vehicle to grid at superchargers or any Level 3 charger as that is not their purpose.
I also would not be worried about solid state cells at this point, they are at least a decade away from commercialization.