I disagree, I don't feel as though there's ever an instance where a civilian should be asked to exit their vehicle in a routine traffic stop, and it is well within their right to stay in the vehicle, especially if the purpose is to dial 911 to make sure there is a record of the interaction and to confirm that there is an officer dispatched in your location (malicious fake police officers and/or off-duty cops are, sadly, a legitimate threat)
Again, it comes down to how officers react to a scenario. I understand that they need to be trained to have lightning reflexes, but deescalation also needs to be a crucial part of training, and there DEFINITELY needs to be better vetting of personality type