BTC can't really fall to that amount. There's too much at stake now. The price of crypto is not like some game where you watch things rise and fall and say that only dumb people sell and smart people hodl.

Because bitcoin is now being used by organizations and it's holding up some foundations and networks, and what not. Maybe in 2013 or something, not a lot of BTC was mined yet, so $100 was a sustainable price. Now the difficulty of bitcoin is so high because so much has been mined... if it falls to $100, then miners would ultimately choose to switch to eth or another lower difficulty coin. $100 is simply not a supportive reward for bitcoin's difficulty. Although, I guess bitcoin's difficulty could fall in the next update to accommodate the drop in price?