What a load of bull manure. As already said 1,000's of Thai's go to South Korea with the sole intention of not coming back, overstaying their visa and working illegally on the fruit farms. My wife's sister is there for 3 years already. Her brother wanted to go but got rejected. There are even Thai organisations that organise these illegal trips and take them to Vietnam first for a week just to get a visa stamp and a travel history.
No way it is racism, its just a click bait headline.