It might depend on where they hail from but it would certainly be unacceptable behaviour where the majority of tourists come from. Lads high on alcohol and testosterone......
Not sure that works so well in Thailand, or whether Chinese cards support it. I have noticed on the slip one signs after using it 'No Refunds' is frequently written.
When at the Pattaya fireworks festival, loads of women selling all manner of items wandering about. Not a one of them I interacted with were Thai..... but I suspected a Thai employed them.