Oh how nice, the slaves are sad to leave because they were some of the few to be treated well. Want me to show you propaganda of slaves sad to be freed in the US? The person in the original video IS TRYING TO ESCAPE.
The vast majority of Kafala slaves are NOT maids, they are construction/agriculture workers.
Go ask them the terms of their employment:
If they could leave on their own (house/country), if they had access to their passports.
If they were being charged "fees" higher than half their salary to stay.
If they were being paid under the minimum wage of the country they are in.
If they witnessed or were threatened with beatings.