What they failed to understand was that the good aliens don't fuck around with this bullshit 3D realm.
When the good aliens arrived they surrounded us with love and light in this realm that exists just outside our conscious field of perception. Less physically constructed, more like an ethereal soup of infinite wisdom where all flows together in a pool of radiated cosmic knowledge and love.
And by only manifesting to this physical construct for those who were ready to receive, the good aliens saved the entire world by banishing the darkness to the lowest recesses of hell, unnoticed to the untrained eye this entire time.