You all miss the point.
When someone dies in Thailand, it is always their own fault.
Take a guy I knew, he brought a plane ticket to go to the UK, he packed his bags, broke down his own door & then jumped off his 9th floor balcony, struggling with himself on the way...
Police concluded it was suicide & said they found weed in his apartment & that this was more than likely the cause. Too much weed = jumping off balconies.
The fact that his best friend had been busted for dealing coke & this guy was trying to sort out a lawyer for him had nothing to do with it...
I'd treat any explanation of a death in Thailand with a lot of suspicion.