As a Swede, I'd be as excited as anyone to get rid of mosquitoes. That said, I doubt they would make a significant dent in the mosquito population but it seems like another example of a technological "fix" without considering the wider effects: Which species depend on mosquitoes as food, and what will happen when they can't eat anymore?
Oh my, yes. Then we would truly have a silent spring, wouldn't we? Perhaps if we wrote a book of some sort, that would stir up people to save the mosquitoes.
Probably we can say the laser causes egg shell thickness depletion, Nobody who knows enough statistics to laugh at us will be heard, if we create enough public outcry.
I don't share your concern that this will cause an ecological problem. I do share your concern that it's a little silly, if you truly want to have an effect on mosquito populations in mosquito heavy areas.
If only there were a substance that's so safe, you can eat it by the gallon, that actually took care of the mosquito problem without needing to have sharks with frickin' laser beams attached to their heads, to do it. Surely if such a substance existed, we wouldn't let millions die from malaria, while we played with lasers. This is impressive, technologically, but it's like ... I don't know, 'using a laser to kill a mosquito', I guess.