I would argue that habitat destruction, the introduction of hypercarivores, and chemical spraying would have a much larger effect on bird and insect populations around urban areas than a reduction in mosquitoes, but I’ll admit that I haven’t done any research (primary or secondary) on the topic.

My point was that a genetic attack vector would have far less side-effects than DDT, and pointing out the flaws of DDT does nothing to criticize attacking mosquitoes genetically.