Regarding the USAF official who says he misspoke about a killer drone AI, I think we have two plausible scenarios:
A USAF official misspoke, then corrected himself
A USAF official told the truth, then walked back his comments, claiming he misspoke
Right now, everyone seems to assume that 1 is true, but why? Even if 2 is unlikely, isn’t discounting it entirely similar to uncritically accepting the original story?
It could be an advanced entity that evolved here on Earth and isn’t capable of traveling between stars, perhaps a member of an ancient civilization that predates humanity.
Remember, “alien” and “extraterrestrial” are not necessarily synonymous.