The term "Fools" is a bit harsh.
When we moved over here, 6 and a bit years back, we talked to lots of people including legal peeps. All said the same that British will would be honoured, oh and take out a Turkish will (at a cost of course) just to make sure. It is only in recent years that the truth of the matter has been known. We all took the same advice and all made the same mistake. When you are getting the same information from several sources you tend to think it is correct. Look at recent debacles regarding visas, SGK, driving licences etc etc. Are all those people "Fools" too?