Okay, aside from the bigger issues of flinging a spaceman into a black hole and expecting to get something other than spaceman soup back out, the whole thing could have been sorted without the death defying plunge into the singularity.
The whole endeavour is booted off in response to a crop blight on Earth that threatens the survival of humans and leads NASA on a mission to find an Earth 2.0. The future of the human race hangs in the balance, dependent on whether we can find new, unblighted pastures on which to grow our food. This could be a new planet or, I don't know, an artificial habitat a bit like the Cooper Station.
Given that the Cooper Station is basically a space age Garden of f*cking Eden, NASA clearly has the ability to grow plentiful crops under artificial conditions, so why exactly are we faffing around with black holes and exoplanets?
You wouldn't even have to fire any humans off into space, but simply build these artificial pastures here on earth. If you can sustain a human population in the cold vacuum of space, you can do it in a glorified greenhouse on earth.
Problem solved and no one needs to swan dive any wormholes.