Quite simply, in Italy, the US and elsewhere, they will increase their budget deficit, and add debt. In my understanding, that's very bad for fiat currencies, while BTC will remain unaffected, thanks to the lockdown on money supply.
Yes you are right. The functioning of the bitcoin network has nothing to do with the development of the Covid-19 pandemic.
Isolation of national segments of the Internet and power supply problems could wreak havoc on Bitcoin, but the pandemic is not.
At the same time, the pandemic affected national currencies (US dollar, pound sterling, yuan, ruble, etc.). The money supply of fiat currencies has increased significantly.
The coronavirus pandemic has shown the weakness of fiat currencies and the strength of Bitcoin. At the same time, the price of Bitcoin is expressed in fiat currencies. Therefore, the price of Bitcoin is rising.