This is sort of hard to articulate but: the person didn't feed me soap, the business and its systems did, and institutional memory is a thing. Like, even above "make a tasty meal" in your rules for running a restaurant should be "don't poison your customers."

Letting someone (or a business) feed you requires a one-way trust - only one of us can get sick from this arrangement after all - and one-way trusts are brittle.

The worker gets all the forgiveness in the world but I'm not going back to the business.