Cautionary tale about how the average person values private information

I don't know if this scenario is the norm or is related to most people but I was so baffled when I found that I have to post it.

Here(Brazil) the most used app for communication is Whatsapp(first warning about low privacy concern) and a lot of people are members of cities/neighborhood/church groups, sometimes with hundreds of members. A coworker whose is part of said groups describe a common practice within the less tech savvy people: When finding a personal document(ID, credit card etc) they take photos of the document both sides without any censoring and spread to many groups as possible trying to find the owner...

Some of this documents have all relevant information to open a bank account or access banking apps and I don't even thinking about what a more tech/professional person could do with some of these information.

If they just ripped and thrown in the garbage was less harmful in any sense to the owner.