More legitimate concerns like damaging the ecosystem due to an over projected population decline resulting in less food for insects, etc
I've read other articles that discuss a similar modification that causes mosquito offspring to be almost entirely male. This has two huge advantages. First, male mosquitos don't bite. Second, after several generations, there is a greatly reduced female population which causes the overall population of mosquitos to crash.
Mosquitos aren't a keystone species in any ecosystem where they live. They aren't the only (or even primary) insect that pollinates a certain plant (e.g., honeybees and almonds). They aren't the only food source for other species. They're just kind of...there...and a huge nuisance for people! If they disappear, other insects will easily whatever small void they leave--at least that's the theory!
I say eradicate the damn things! And get rid of ticks next!