The only real alternative right now is DDT, and whilst the human toxicity of DDT is a bit exaggerated in the public imagination, its still not exactly a great solution and has awful environmental effects. Worse, the bloody mozzies are developing resistance.
What are folks to do? Reject it because of a theoretical concern about gene propagation whilst theres a very concrete concern about the alternatives? Malaria is a thief in the night who steals entire generations. Forget HIV, malaria is the #1 health issue in the world (Although while we are there, Malaria is a death sentence for HIV afflicted folk. Which in africa makes it serious double jepardy)