I admit I'm not sure what the situation would be if I buy a new personal Toyota in my current residence (Quebec, Canada - forced consumer arbitration is illegal) and then later import it into the US as part of a move there. But I'm hoping I'd avoid the trap.
At least the current version of the congressional bill is retroactive in its restoration of access to the courts. I hope that stays true in any final version.
99.99% of people buying a car don't care what the drivetrain is, what differentials are in it, what engine is in it, how anything works, nor do they care. I wonder what percentage of buyers know whether the car they just bought is a FWD/RWD/AWD/etc vehicle, or even know the difference.
I think the sad truth is that because of this there's no market pressure to do things right. There's also the problem of regulation and vehicle manufacturers basically being forced into doing stuff like this as time goes by.