LBC's objective is to "find a collision in which 2 different private keys go to the same wallet" that's it. Will this break bitcoin? No, but it will be a proof of concept that bitcoin is not as secure as most people think it is.
I think the bolded part does not accurately describe true objective of LBC
because the keys they found are exactly the same keys used by the puzzle maker
they do use the word
"collision" but they're not actually simulating a true collision
imo, they are simply brute forcing to find matching keys for addresses in the puzzle transaction