And since you have raised another objection to the OP argument, perhaps you and IT (and anyone?) might care to reconcile Bhagavad Gita 7:21 which translates "Whatever celestial form a devotee seeks to worship with faith, I steady the faith of such a devotee in that form." with the essential monotheism of the Iqan. There is no teaching in Iqan that corresponds to this condoning of polytheistic idolatry - is there?
That is fair, so lets settle on a translation and we can explore some thoughts.
BHAGAVAD GITA Chapter 7: Knowledge of the Absolute TEXT 21
yo yo yam yam tanum bhaktah
sraddhayarcitum icchati
tasya tasyacalam sraddham
tam eva vidadhamy aham
Other Translations;
1) I am in everyone's heart as the Supersoul. As soon as one desires to worship the demigods, I make his faith steady so that he can devote himself to some particular deity.
2) Whichever devotee desires to faithfully worship a particular form, I fortify his faith in exactly that (form).
3) Whichever devotee wants to worship the form of whichever god with faith, I make the faith of that-that devotee firm in that very god.
4) Whatever form of the demigods a man desires to worship with faith, I make his faith strong in that particular form.
Reagrds Tony