I will probably get a few negatives on this one but here is another point of view.
The Thai justice system being what it is,it is not the same wherever you
are from,
He already paid the family and that goes a long way here in Thailand.
Ok, i agree the sentence should have jail time but he got off easy.
On the other hand,putting a doctor in jail while there is a shortage of doctors will not do any one any good.
As far as justice (the Thai way) goes,the family did receive justice.
Yes, i know,