That is correct. All the more reason to let them kill themselves. There will be less left to deal with. And added benefit, they do not procreate.
You know the idiom "Let sleeping dogs lie".
James 5:20 KJV Let him know , that he which converteth the sinner from the error of his way shall save a soul from death, and shall hide a multitude of sins.
Jude 1:23 KJV And others save with fear, pulling [them] out of the fire; hating even the garment spotted by the flesh.