Not necessarily, but the advancement of the technology and refinement of the technique are not progressing very quickly and since it's so far away from human application, there's not a lot of money/investment in it.
thats not true. crispr gene therapy was just approved by the fda for sickle cell syndrome. the methods ability to change dna on living organisms is why its a big deal in the first place.
While that gene therapy does exist, it is not the same as what is being done here. The offspring of these mosquitos will have this same modified gene. The offspring of the recipients of the Sickle Cell gene therapy will not have the modified gene. We have the ability to alter a single human for their lifespan, but we do not have the ability to alter a human in such a way that their offspring will carry the same modification.