This feature "filters" comments as they're made, it's most definitely something that was built as a feature he even says as much, it's not "database access", it

This feature "filters" comments as they're made, it's most definitely something that was built as a feature he even says as much, it's not "database access", it's a built in feature for filtering (censoring) bad content. It doesn't remove old mentions, it disallows future mentions.