I don’t know how one can prove that one sees what others cannot. He seemed an open & honest individual. I thought he misinterpreted Trump’s loss in 2020, thinking the country needed a breather. No, Trump needed it, & he’s come back like a lion. A blessing for all of us.
My family has experienced many paranormal incidents - esp, clairvoyance, a visitation by a departed family member. Even a UFO. So I guess I’m open to believing this can be true. Too many just want to shut their minds to these things. I try not to limit what God & his universe can do.
Nevertheless, a handful of mediums and psychics have been scientifically validated, and there is an entire field of evidential mediumship in which proof is obtained under tightly controlled conditions. Hypnotic regression is also credible in the proper circumstances, and there is interesting work on the physics of psychic experiences and events.
As for Blake Healey, his account is unusual in that few have reported anything like it. If his experience is true, I would expect more to describe seeing angels and demons as he claims.