Borrowing money for bitcoin investment is of course a good thing, this is because of the potential for prices to continue to rise in the future, if there are banks that provide easy loans then we have to try it, I'm sure in 5 or 10 years the price of bitcoin can reach $ 1 million so bitcoin will be the most valuable asset.
What do you have to prove? If you were sure about the future of bitcoin, how much did you invest in it? I would say that borrowing money to invest in bitcoin is the dumbest thing in the world. Bitcoin does indeed have upside potential, but there is no guarantee of that and we also need to take into account that it will crash in the future.