I’d totally buy that too. There is definitely a stigma attached to drink driving which doesn’t exist with phones. Many many more people drive using their phones who wouldn’t dream of drunk drivingAnd the stats claim more accidents are cause by mobile phone use than drink driving, which I can believe too.
@portland_bill made the very valid point above that drink drivers tend to try to compensate by trying to focus harder on the driving. But with a phone in your hand you can’t increase your focus on the road, your attention is totally away from the driving