As history is far from a precise scientific field of study one can't claim with absolute certainty that something is the way it was interpreted.
Augustus was the rightful heir to Gaius Julius and it is understandable why he would seek to establish control over Egypt, especially with the last Pharaoh colluding with his rival and supposedly having pretensions to influence roman politics.
I don't believe he was anyone's puppet because he didn't do much to further the enemies interest.
Whatever the truth of the matter may be, he was a great man, even if he was a bit full of himself. The title that he insisted the senate grant him can be seen as a feat of narcissism or a reflection of a noble ambition that we all here share - to be divine.
I'd love to hear an elaboration of why you think he was a puppet and your view on the Ptolemaic Kingdom in relation to Rome.