Kamala aunty didn't mention QUAD in her statement.
I think the fundamental message here is that Democrats don't want India to play a significant role in geopolitics militarily. I think this stems from the self-righteous need to virtue signal about India and Pakistan having too much military power and that they should not have nuclear weapons. Part of that is due the usual globalist virtue signal about peace and deescalation, part of the globalist grand design for India/Pak, Trump was an anomaly in that he actually was capable of seeing the possiblility of India's future not ultimately resulting in a submissive "peace" situation with Pak.), part of it is anti-Hindutva sentiment of cultural marxists/globalists etc.
Again putting India in the same bracket as Pakistan for the usual reason (not being "Islamophobic" by favoring India, not angering Saudis/Turkey by seriously threatening Pak's existence or stockpile of nukes that they want kept safe for their own needs, not ACTUALLY having any desire for Pakistan to be denuclearized or Balkanized or go through anything that would reduce the likelihood that it can be used for it's strategic location and reassuring Porks of this).