User blog comment:Tommy,Klaus&Kol2012+/How exactly can you kill god and the darkness?/@comment-31767970-20181215042510/@comment-26982641-20181215112718

It is not confirmed that Death's Scythe could kill them. They existed before the concept of Death. And soul bomb is not confirmed either, it was their last effort to at least do something rather than sitting tight with their hands tied.