Definitely not limited to Thai/young men/poor people. Seems to be for anyone wanting their 15 mins of fame by doing something dumb and dangerous for likes on social media.
In fact id say it appears to be more of a thing in the US
A bit confused by what you believe their intentions were
Are you suggesting they hired you to fill a farang quota? Or hired you as a language teacher on the outsidr but wanted you to do other stuff?
Thats some disturbing numbers
Husband 67 years
Wife 48
Grand daughter 14
Age gap between husband/wife: 19yrs
Wife/grand daughter: 34 years, (could be stepgrandmother)