Amagine what is will be if the person with fake diploma will became a doctor and start to treat people. He can kill the people insted of treatment.
In the same way, the same architect who bought a diploma can make a plan for such a house, which may collapse after settling. There will be a lot of grief.
Or pilot of the plane without dipmoma. It can cost not one human life. And there is not only deplomas, there are a lot of different sertificats from different refresher course and upgrades.
100% need to organize the card check diplomas and certificates. Just the service of the project will provide the world with such an opportunity. And the sale of documents will be eliminated.