You called this con artist playing astrophysicist out and well. Reading this article on Binary Black Holes
https://en.wikipedia.org/wiki/Binary_black_hole
leads me to believe if you aren’t there at the exact moment of convergence you’re out of luck. Not only would you have to be on station for that moment you’d need computational power and fantastically more durable materials than we can even envision at this time. But without ideas and imagination we don’t progress.
I’m pretty skeptical of these claims but I have to say I don’t honestly know, but it seemed pretty incredible to think that would work.
I was just playing around with creative writing and sarcasm. Still skeptical of outlandish claims but you’re right, it takes ideas and imagination yet I think these are more ‘look at me’ than real ideas.