No, tailgating would be a significant cause of the crash.
A driver -- legally, logically, practically -- should always maintain a safe following distance from the vehicle in front of them so that they can stop safely. It doesn't matter if the vehicle in front of them suddenly slams on the brakes because a child or plastic bag jumped in front of them, because they suddenly realized they need to make a left turn, or mixed up the pedals.
A driver -- legally, logically, practically -- should always maintain a safe following distance from the vehicle in front of them so that they can stop safely. It doesn't matter if the vehicle in front of them suddenly slams on the brakes because a child or plastic bag jumped in front of them, because they suddenly realized they need to make a left turn, or mixed up the pedals.