FWIW -- It looks like Sri Lankans can use Payoneer and that they will be invited into Managed Payments sometime this year.
This is based on information by a more capable SriLankan poster.
I agree that most of these lads are being rooked in some way. The risible listings and money-losing shipping methods should be obvious. A lot of ambitious but naive youngsters and a YouTube video that strokes their fancy, I fear.