Who cares about the code and stuff? What I care about is the people... Many people will lose their life savings, and many businesses will go bankrupt especially crypto businesses. This will create chaos, as many people will go crazy or even harm themselves.
So it's possible that the BTC price will drop to zero overnight in the sense of nothing is impossible in business, just look at Enron, SBF, etc. I only hope that if the price crash, it will not happen overnight, and give people enough time to exit.