I can pay back mre than the original
payback, but I cannot pay back
10x more because of the BTC price
rise. I'll pay you $15 in BTC which is
MORE than I was supposed to pay back,
I cannot afford $100, that is a lot of money
You set the loan terms.
Borrowing 0.7BTC
And paying back 0.9BTC
It doesn't matter what the BTC price did, you need to pay back the agreed upon repayment.