The God of Israel has given instructions for how to worship Him by testifying about His nature. The Son has the exact image of God's nature (Hebrews 1:3), so the way to worship Him is exactly the same as the way to worship the God of Israel. So if someone is following those instructions, then what difference does it make for them to label what they are doing as worshiping the Father, as worshiping the Son, or to not label what they are doing as either? In James 2:18, he would show his faith by his works, so if someone is showing the same faith by doing the same works as James, then what difference does it make which label they use to refer to the being that they are worshiping? If someone were say that they are worshiping Piufgedha and that communicates to everyone that I am worshiping a being who has the same nature of the God of Israel, then what difference does it make to say that they are worshiping them or the Father? What should be important is that they are worshiping a being who has the nature of the God of Israel, not the way that they refer to that being. If there is no difference in what two people are doing other than the way that they label it, then whether they say they worship the Father alone or worship the Trinity is a moot point.