Dianne Lee insurance is mandatory? Also you could take the money out and still run up large bills. But you are right! Its a third world countries leverage over you. During marshal law they could just take it! If you hit someone in an accident they would freeze it. Same with any legal action against you.
You can just put 800,000 bht in the Thai bank yourself. Which I think is also absurd. If you have the money, you have the money! Why must I put it in your pocket for safe keeping!?!