Do you think "pro" signals anything? I always assumed it was like "sport" in a car - i.e., meaningless. (I have a "sport" car. And... it has 4 doors. And a dies

Do you think "pro" signals anything? I always assumed it was like "sport" in a car - i.e., meaningless. (I have a "sport" car. And... it has 4 doors. And a diesel engine.)