The assessment seems to be correct. After a long 40 days, Moses returns to the Jewish people with the tablets of the law in his hand, following the idea of a “one, eternal, invisible, inconceivable” God. However, he sees the people dancing around the golden calf image, having been tempted by his brother Aaron. Idolatry triumphs over truth.
Now, if Arnold Schönberg’s biblical opera “Moses and Aaron” is criticized, it will be a tedious task…