@firedragon - there is a learned person who writes on Quora - Rami Sivan - he has - IMO - some very interesting insights in to some of the questions you have raised -
Also I noticed an injection by
@Muffled earlier trying to proclaim - without evidence - that "Christianity is superior"
In the Geeta - Krishna replies directly to Arjuna about worshipping "other" deities
yo yo yāṁ yāṁ tanuṁ bhaktaḥ śhraddhayārchitum ichchhati
tasya tasyāchalāṁ śhraddhāṁ tām eva vidadhāmyaham
Whatever celestial form a devotee seeks to worship with faith, I steady the faith of such a devotee in that form
sa tayā śhraddhayā yuktas tasyārādhanam īhate
labhate cha tataḥ kāmān mayaiva vihitān hi tān
Endowed with faith, the devotee worships a particular celestial god and obtains the objects of desire. But in reality I alone arrange these benefits.
And it is not a free pass -
antavat tu phalaṁ teṣhāṁ tad bhavatyalpa-medhasām
devān deva-yajo yānti mad-bhaktā yānti mām api
But the fruit gained by these people of small understanding is perishable. Those who worship the celestial gods go to the celestial abodes, while my devotees come to me.