It is interesting how the Sumerian Genesis stories are so much like the Biblical account, but from a polar opposite POV.
It is all probably vastly more complicated than just what was presented in Gen 6. That said, I think we are about to find out.
I believe they are prepping a narrative (the bad angels that is). They are about to convince folks not taken in the Rapture that they, the ‘aliens’ seeded human life on Earth and removed troublesome ‘Christians’ to make way for world wide peace ... under the antichrsit of course.