Totally true and I won't disagree with you Fred, however it's no different from Europe, the America's, any and every country in Asia and the Middle East, (some more than others ) and Africa,
I've met some really nice “girls” in bars and clubs, but not all are gold diggers or scammers (though your advice should not be ignored).
Within my line of employment I visit many many countries and the scams are how you say but many times worse and openly worse
maybe because of my background and years of travel I've become so accustomed to it (meaning I can smell it a mile away) and see the scams before they happen I can stay clear
But if some are to say bar girls or club girls are scammers and gold diggers I would have to disagree, it would be like saying all government employees are honest, it's evident it's just not true, many are but not all