The documentation seems to be pretty clear about that only OSS images and images from Verified Publishers will be ignored in rate limits, and there is no word about exceptions. In the original announcement it is specifically stated that
we are thrilled to announce that we will suspend data pull rate restrictions, where no egress restrictions will apply to any Docker users pulling images from the approved OSS namespaces.
I tried to pull the istio image as an anonymous user and it was counted in my anonymous rate limit. Since I’m usually logged in as a pro user, I don’t notice these issues, and I don’t know the reason, but you can try to report it on GitHub
That is where you can find more people who can help you from the staff.