Every fraud rule is built to be suspicious, and a rule that is only ever suspicious will eventually slow down the customer who has taken every parcel you sent and paid for all of them. This is the check pointing the other way.
Loyal Customer is a premium option: with any premium option on, the crop bills 1 coin per label. Cropping and sorting on their own stay free.
Every part of that rule reads a final outcome, and outcomes arrive when you import your Meesho or Flipkart payment or settlement workbook. Label PDFs alone give the crop the buyer identity; the settlement file is what tells it how those orders ended. Import nothing and nobody qualifies — which is the correct answer, not a bug.