Summary
AWS Trusted Advisor failed to identify public S3 buckets when any of the 3 were denied and related changes had made the bucket public: s3:GetBucketPolicyStatus, s3:GetBucketPublicAccessBlock, or s3:GetBucketAcl.
References (provide links to blogposts, etc.)
https://www.fogsecurity.io/blog/mistrusted-advisor-public-s3-buckets