Why are IgnoreNoIndex, IgnoreNoFollow not ignoring pages?

When the ignoreNoIndex and ignoreNoFollowTo settings are enabled in Algolia's Crawler, the following behaviour is anticipated:

• ignoreNoIndex:true and ignoreNoFollowTo:true let the crawler ignore the directive of “NoIndex“ and “NoFollow“, so the crawler EXTRACTS records from the page

• ignoreNoIndex:false and ignoreNoFollowTo:false let the crawler follow the directive of “NoIndex“ and “NoFollow“, so the crawler DOES NOT EXTRACT records

However, the correct way to ignore pages it to use exclusionPatterns: Crawler: ExclusionPatterns | Algolia.