If DDT is your solution to eliminate mosquitoes we'd have to imagine a world without several dominant raptors as well. And again, it's almost-certainly an endocrine disruptor so more fem boys to boot. This world is already worse than I'd imagined with their presence. I think gene drive extinction technology will do a better and cleaner job than DDT ever could. However that tech is also super scary. Fuck man what if that's the covid vaccine? Holy shit. You'd never know until it was too late - the effects would only be seen after a few generations when suddenly everyone with grandparents that got the vaccine is sterile.