I agree that paying to get your property back when it was your fault is fair. I had no dispute with the article, I was just interested to see if folks had encountered this.
Last year, a companion left a good jacket on a Wizz flight arriving in Vilnius. We phone the airport the next day and eventually tracked it down. The cost was using our phone on roaming! When we returned to the airport for departure, the lost property office had it safe and the process to get it back was as they had said it would be.