We all agree this is not good ethically, but you are confused on how the economics work. Foreign money flowing in, and at a higher salary than local average? That’s money that gets taxed by the Filipino government, that buys groceries at the corner shop, pays for a local nanny and overall improves the local economy.
Also what are you on about with the reduction of labour force in third world countries? They have unemployment up the roof and no employers by definition, it’s a third world country the one thing there’s no shortage of is people looking for work