Who said this is the AGPL version of MinIO? It was only a little over a year ago that they changed from Apache to AGPL. MinIO wrote that they only suspected an AGPL violation. Most their accusation was focused on the Apache license.

There would still need to be an acknowledgment from the NOTICES file, but that’s it.

I don't know. But they have been thoroughly informed of the issue and have not acted. Thus I conclude they most likely feel they don't need to act.