I also agree with your observation about orbs and other phenomena appearing to those who seek them out. It always reminds me of Count Dracula and the rule that he must be invited in.
It's curious how these 'others' seem to behave like mythical beings who can't cross spiritual boundaries without permission.
Yup—I am currently reading one of the Secret Space Program books:
https://www.amazon.com/Ceres-Colony-Cavalier-Account-Abduction/dp/B09PHH7LC7
He claims that as a boy aliens asked for permission before enlisting his services in their “program”.
The poor kid thought he was helping human-alien relations.
He got that so very wrong.
The old myths may well have been based on truth.