Satan does not need fallen angels to breed with humans to corrupt their DNA.
Mankind is willingly doing it in the form/under the guise of genetic engineering.
Amen. Heard a sermon once about “strange flesh” (humans/angelic beings) being part of the reason for the flood. Can’t help but wonder if another type of strange flesh (animal/human, genetic engineering) will be part of the reason that serves as a trigger for the rapture.