No, I Can't Possibly See What Could Go Wrong With GIANT Dragonflies Bred in a Lab

You know what there's not nearly enough of, on this fine planet of ours? Dangerous animals that could wipe us all out in one fell swoop. I guess that's why these sadistic scientists bred extra-large dragonflies, then?
The scientists raised atmospheric oxygen levels to above 30 per cent, which is closer to how the Paleozoic era's environment would've been, supposedly. Once the air was right for breeding, Dr John VandenBrooks and his team then successfully managed to breed dragonflies with wingspans of roughly 70cm.
Oversized cockroach breeding was also attempted by Dr VandenBrooks, but thankfully he failed. I don't have to remind you how resilient cockroaches already are, but cockroaches on steroids? Someone give me access to their bomb shelter, and fast