I am sure this is detailed in Buddhist philosopy, although I can’t recall having seen this in the sporadic readings I have done in the area.
One of the six realms is the God realm, defined by bliss but also impermanence.
It seems that this describes an awakening as formless awareness – as the Witness, F9, causal realm – quite well.
There is bliss and a certain release from suffering, and it can certainly last for a long time. Still, there is the belief in an “I” here, now just placed on pure awareness. The seeing is made to appear as a seer.
With this subtle “I” there is also a subtle “other” and attachment to content. And as content always changes, it inevitably leads to a fall from grace. It is temporary.
All of this sounds a lot like the God realm.