Ehhh, I recently posted elsewhere: about 80 species of mosquito carry dangerous (for human) diseases. The other 3400 are harmless if very mildly annoying. And all of those species share a niche with their harmless genera mates.

It's really really hard to kill just one species though, especially if they DO share an ecological niche with the species you don't want to kill.

It's my understanding that ecologists generally agree we could eradicate human-biting mosquitos and it wouldn't cause any real problems. Yes, other species eat them, but they're not a critical species in any ecosystem, apparently.

You know how there's those stories of scientists introducing a species into an ecosystem for one reason or another, and all sorts of unintended consequences happen? Ever notice how those stories are all from around the 1950s and earlier? It's because we actually got pretty good at thinking through all of the possible significant impacts. We only introduce/eradicate species now when we know doing so is a good idea and have worked through the consequences. But I want to be clear that I agree with your sentiment. You shouldn't intentionally change an ecosystem without serious planning and consideration for what will happen when you do.

This isn't really true though, especially since the mosquitoes in question aren't even native to the Americas, and whole ecosystems evolved without them. I have also read multiple things about how mosquitoes don't actually make up much of the diet of these animals anyway, because they are tiny and provide almost no nutrients, these animals prefer most other insects before eating a mosquito