« As long as you are able to off ramp » that’s exactly the issue. At best, off-ramp will be #KYC only and pervasive (look into the #TravelRule) and cash phased out.
Yes, parallel economies taking #crypto payments will still exist but how large and convenient will those be? Again, that brings up back to the question of adoption.
I agree that if for whatever reason they can’t restrict off-ramp then adoption would matter less but they are working hard at the task.