Many countries are using blockchain technology to fight against the pandemic.
Why the price of Bitcoin is still down?
I don't think so...many countries allow their people to use blockchain technology but the question is, are they using it now? May be (only a few of them) because not all knows about crypto and not even acceptable in the market pushing them to still use fiat. I don't think that the pandemic will increase the adoption and people will look into crypto. They still have other options in buying stuff in a cashless payment system and that is the use of credit or debit cards.
There are still many speculations about the adoption of the blockchain at the time of this epidemic because indeed it was only used in part maybe maybe 30% of the remainder only using credit and debit cards as you said it.
Many people now do not contact anymore because to prevent being infected, people are still using debit cards to do whatever they need, blockchain adoption has not been fully permitted by the government, so many doubts about it.
Indeed, for the decline, I don't think this is the effect of the current pandemic from yesterday, but has also fallen further.