Indeed, but then you can (for example) just basically blocklist this ID and share this blocklist with other servers (and likewise import blocklists) -- a blockl

Indeed, but then you can (for example) just basically blocklist this ID and share this blocklist with other servers (and likewise import blocklists) -- a blocklist curated by one or more NGOs or the sort would be ideal. Fixing a malware infection should be like fixing up anything else broken around your house (clean things up, re-auth yourself with the ID verifier, done). Also, bots cannot simply automate renewing the credentials of course, after expiry you should be required to physically (or in a trustworthy digital medium) re-authenticate yourself preventing any kind of mass attack, you'd need millions of people to perform authentication multiple times a day (by that point it seems safe to assume they'd rather fix the malware source in their personal devices).