For posterity, they updated the post on Mar 7 and will be emailing anyone affected.
"Update March 7, 2022: We appreciate the feedback from the community and our customers, and will be emailing users as part of this disclosure. We apologize for not doing that at the same time as the post/disclosure on Friday, March 4, 2022."
"Update March 7, 2022: We appreciate the feedback from the community and our customers, and will be emailing users as part of this disclosure. We apologize for not doing that at the same time as the post/disclosure on Friday, March 4, 2022."