> Technically 14 days is multi day, but when it can be measured in weeks, you might as well.

What does that mean? Two days is multi day. Even 25 hours is multi day.

Reliability is measured from a customer's perspective, not from a geeky vendor-oriented perspective of a backend service. When the vendor deletes data, the vendor's reliability quotient decreases, because that data is no longer available to the customer.