>>938492527
They see the money that can be made from it.
They're being paid thousands, so much more money than they can make as a normal doctor in their country doing a surgery that is pretty unregulated and easy to do. If they're lucky they get money for the after care too.
If you was in a country where you was allowed to perform dodgy surgery on foreigners for far more money than working in an important hospital, surgery that is relatively easy and basically unlimited patients, you wouldn't care either. The money they're making is insane.