Flashback to my first post
Where are these gods mentioned? Or is there anywhere in any ancient text that classifies the conditions required to be “reborn” there or how many years they live there like how it’s described with other devas? No relevant search results results for “saññavedayitanirodha AND vassa/kappa/deva”, so I don’t think it makes sense to be reborn to a non-state, like how it doesn’t make sense to be reborn into nirvana.
The main difference I see is wisdom. One can be without perception and feeling and doesn’t understand that wisdom and has the potential to suffer afterwards.