Do Battleragers add strength modifier to their spike armor damage?

@JeremyECrawford do battleragers add str mod to their spike armor damage or do they need a feat such as two weapon fighting?

— Kenneth Ray Mcmillan (@Kennethrayjr) February 6, 2016

Battlerager Armor: "You use your Strength modifier for the attack and damage rolls" (SCAG, 121). https://t.co/CfVToTSpv8

— Jeremy Crawford (@JeremyECrawford) February 18, 2016