When the price rises sharply, it will attract people's attention. Similarly, when the bubble bursts, it can also attract people's interest. Those who have been belittle the bitcoin before can come out and claim that "the one that I said before is correct, those who buy bitcoin are idiots."
No one is fool for taking the risk, they just believe on the potential of coin and getting this as an opportunity because it is cheaper. It is good that there are people that discussing bitcoin because that is a way that people can understand, they can get an explanation. Also bitcoin is develop as new payment method not as an asset.