"For someone who passes the event horizon the entire future history of the universe plays out above them" I believe this is only true if you have found a way o

"For someone who passes the event horizon the entire future history of the universe plays out above them" I believe this is only true if you have found a way of lingering with zero speed at the event horizon. If you are entering it at near light speed, as you likely would, you will be ingested as a part of "treadmill" containing yourself as well as all the light and will not see much of the future history.