Why do Facebook and Twitter and etc. permit posting of airline QR codes and credit card photos without a safety warning and an option to safely blur out the sensitive bits?
Why do they permit it...? Because they aren't our parents and shouldn't be responsible for all the stupid shit that users could do.
The real question: Perhaps we can politely convince these services to display safety warnings & blur the sensitive bits? Want to be proactive about it: Help develop a plug & play library for services to use to accomplish this feat.
If they'll do this for one case like QR codes on boarding passes, then the question and and expectation will arise, why don't they do it for every other possible case?
This is not their job and not their responsibility, period.
The real question: Perhaps we can politely convince these services to display safety warnings & blur the sensitive bits? Want to be proactive about it: Help develop a plug & play library for services to use to accomplish this feat.