Whats the consequences for rejects?

I felt a bit uneasy with this piece of news in Thailand.

A shocking story is unfolding in Thailand. Migrants and refugees who turn up on its shores have testified that they are being sent back to sea in boats without engines, their hands tied, left to their fate.

Hundreds are thought to have suffered this treatment - among them many Rohingya people of western Burma - and many have died.

This story unfolded when some victims were found in various place including Acheh, Indian Ocean, and Andaman Island in Indonesia. These chaps entered Thailand illegally by boat and detained by Thai military. They were not handed over to police or immigration as illegal imigrants. But were detained in another island, sleeing out in the open and hands tied at night.
After a few days , a barge towed by navy boat arrived. These Rohingya migrants were forced at gun point into the barge. When they refused, their feet were tied and threw overboard. Then the ropes are cut and barge set adrift at sea with little food and water.

I felt that its kinda inhumane to set the barge off and let those poor guys float into the vast ocean with no where to go.

Why they do that?
1. Its economical and quick way to deport illegal immigrants
2. The poor chaps are Muslim and they will join the insurgent in South Thailand ( reason given by Thai officials)
3. The poor chaps arrived in large numbers( few thousands) and all are man

Its just saddening.

I have also got some uneasy feeling about this comments by Thai officials.

most of the Rohingya want to go to Malaysia - where there is already a community 20,000 strong and the prospect of well-paid jobs .

Is this a fact and accepted by our Malaysian Immigration or police?