I HAVE read it and you are 100% incorrect. That does not dictate how to lean addition.
CCSS.MATH.CONTENT.1.OA.A.1
You are asked to solve word problems using addition and subtraciton under 20.
CCSS.MATH.CONTENT.1.OA.B.3
You are asked to learn the commutative and associative properties of addition
CCSS.MATH.CONTENT.1.OA.C.5
You compare adding to counting
CCSS.MATH.CONTENT.1.OA.C.6
You are taught to start using grouping
CCSS.MATH.CONTENT.1.OA.D.7
You are taught to use equalities
CCSS.MATH.CONTENT.1.OA.D.8
You are taught to use equalities to solve unknown variables.
None of these standards talk about a way to teach addition, they are all how to use addition, or comparing it to something else. It is a step by step approach to what is needed to learn addition, and covers what most 1st graders learn.