I believe the person you replied to is pointing out that in many cases it's impossible to actually do what you describe, because it is not possible to discern t

I believe the person you replied to is pointing out that in many cases it's impossible to actually do what you describe, because it is not possible to discern the actual identity of the business from what appears on the credit card statement. I can think of multiple times I've seen a credit card charge with an absolutely inscrutable "merchant" field, and the only way I've determined where it came from was to search my email for the charge amount.