As mosquito related problems are just plain hard and in this context ther is no other viable solution, I also think the usual fear is less important in this context.

But for the sake of the argument, the fact that this mosquito comes from Africa doesn't really matter so much, as the consequences of this operation could go from making it immune to this gene, make it mutate in a different/worse direction, or have the engineered mosquitoes affect the environmenr in other unknown and not measurable ways.