Even without DBS logic, Goku should've been killed when he reverted to base form and FP Freeza threw a destructo disc.
Assuming he gets killed by that last sneak attack, Freeza collects his severed body parts and goes back to his empire's
capital where scientists reattach them to his body. Then he attacks Earth and kills everyone. Also, if he's smart enough,
he obtains Earth's dragonballs and becomes immortal.