Hacksaw brings up some great points; it's by no means a straw man argument.

But I do think the key line from the Soldiers Creed is:

"I stand ready to deploy, engage, and destroy the enemies of the United States of America in close combat." Basically the antithesis of COIN.

Destroying enemies of the U.S. in close combat is not the main objective for U.S. ground forces in the COIN environment.

Words have meaning. Don't call people Warriors if you want them to behave like pacifiers.