That could be true, but it is worth noting that Khloé has been a known alien-believer for a while and has publicly documented past sightings in California.
There’s of course the possibility that they were mistaken, which seemed to be the general vibe the next morning from the family when Khloé recounted the story.
Fans may have felt the same, and perhaps that Keeping Up With The Kardashians was really reaching with its latest storyline to try and get content (even though that shouldn’t be that much of a struggle) for an episode.