Kemola, carrier landings are, basically, a controlled crash-landing &, as the main gear hits the deck, full throttle is applied to the engines in case either a) the hook fails to catch; or b) the hook catches but the wire fails/breaks. This is the only way an aircraft will have even the slightest chance of getting airborne in an emergency. Activating a reverse thrust system is fine, unless something goes wrong, in which case the aircraft is definitely going to be a write off & there's a good chance of the crew suffering serious injury or death.