Namaskar,
There seems to be some confusion here and elsewhere. Dvaita's monotheism is not like Christianity at all where other gods are totally negated. In dvaita, Vishnu is held as the supreme God, but other gods are also accepted. Only they're part of the hierarchy called as devata taratamya (hierarchy of gods). In fact, there's also daitya taratamya (hierarchy of demons).
Point is, nothing is rejected in dvaita. It's accepted as part of hierarchy, with Vishnu as supreme.
Karna
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