Actually not true. Apart from the statement, both Biden and Kamala Harris made direct references to India on Independence Day, both with wishes and direct references to how they will take the relationship forward.. That is about as direct as any one can get.Diplo talk which adds no real world value to India-US relationships beyond what already exists.
Not his team’s fault, they already know that most of the Indian Americans vote is in their pocket, so why bother.
Pakistani Americans are doing a much better job at getting what they want done, they are even influencing american foreign policy.
There is an understanding that Indian Americans might play a significant part in some swing states and a realisation that Trump has made some inroads and there is scepticism about the democrats. Joe Biden himself has always been an India supporter but there is a fear that he might not fully be in charge and that the Sanders group might be influencing the messaging. This direct appeal to Indian Americans is the result of Joe Biden asserting himself but also of an political reality in some states where Hillary lost by less votes that the number of Indian American voters present in those states.