I think cryptocurrency is far from the first thing that comes to the minds of government when they hear "contactless payment" - they would likely think about bank cards, PayPal, GooglePay and so on. There might some small chance that it will indeed lead to crypto recognition, but I think at times of the crisis no one will have time to think about crypto. And potential adopters might be scared off by crypto's volatility, as we see that crypto markets aren't doing well now.
You have a point. Not everyone would want to take a risk on crypto especially when there's an issue like this. Like what you have said, there's a higher possibility that they would go with card payments but crypto payments can also be their option if they have or they want to. It's not necessary that they will shift from fiat to crypto. But since Korea has recently legalized crypto, it will give crypto a higher chance to be noticed by Koreans.
Slowly but surely maybe some will switch to crypto as a means of payment because at times like this condition or being crunched crypto may be relied on but must go through contact, but this is still not fully acknowledged even though Korea has legalized crypto in other countries but other countries We have not yet received the presence of crypto, so it is still a negotiation, and is it possible that we will adopt many other countries, of course we know that.