Erradicating a mosquito species could have negative ecological consequences unknown now, and on top of that, there’s the risk of another vector taking the mosquito’s place.
I fully agree with you that something has to be done about these diseases. Going back to your first post I replied to: my mother had Polio and lived with minor side effects all her life, while thanks to vaccines, that disease is something from history books for myself and my children.
I am just concerned that people tend to ignore the risks from things we don’t know exist and therefore don’t usually account for.