In general I do agree with you; here I think it is different, with 2 different options. 1. You can use Monero like blockchain 2. What's allowing to de-anonymi

In general I do agree with you; here I think it is different, with 2 different options. 1. You can use Monero like blockchain 2. What's allowing to de-anonymize wallet is the multiple transaction you do, especially the transaction linked to the real word (eg. stuff with KYC or with your someone's postal address). Here this could be a "wallet" that only send or receive info from other "covid wallet" without link to real life info, and with only very few transaction (when you have covid, or are at risk). That reduces the risk of de-anonymization