With the risk being that we breed immunity into the population, seeing as it's still being carried and evolving in its carriers (the mosquitos).
FWIW, we could "cure" a lot of these diseases. We have, in rich parts of the world. If the option was between "we distribute cures to forgotten diseases to everyone who needs them" versus "we take a gamble and murder all the mosquitos," I might agree the former would be the better bet.
That's not the choice we're given because not enough people in the first world want to step up in a serious enough way.
It doesn't really take that many people; these need not be expensive programs. It's a matter of political will, but a serious vector control program would be no different.
In any event, learning how to control human diseases and prevent parasites from killing us seems like a very fundamental goal of medicine which should be accomplished in any eventuality. Eradicating mosquitoes need not be.
Also, regarding resistance, it is much easier to track and defeat resistance in human patients than to track and defeat resistance in wild populations of mosquitoes, which is what we'll be doing if we try eradication campaigns.
FWIW, we could "cure" a lot of these diseases. We have, in rich parts of the world. If the option was between "we distribute cures to forgotten diseases to everyone who needs them" versus "we take a gamble and murder all the mosquitos," I might agree the former would be the better bet.
That's not the choice we're given because not enough people in the first world want to step up in a serious enough way.