I had the same thought, but, knowing how much an apartment in Kuwait costs, if he were even middle class, he should have a 1 or 2 bedroom and still be way below his means. That apartment looks like a 300-400 dollar per month apartment, in USD.
But, I am not familiar with Syrian culture. It could be like Mexican culture in the US where they will come here, live as cheap as humanly possible, and send every penny back home. That is what his apartment looks like, someone who didn't spend 1 extra penny, and I know Syria is in bad enough shape that he very well could need to be supporting his entire family.
The other thing was I read that she flew over in the back of the plane. She is humongous. If you were ever going to spend a little of your savings, business class for her would have been the time. There was no guarantee she would even fit in 1 seat if she was flying back of a crowded plane. If you had the resources, it would be crazy not to have bought her business class or at least 2 coach seats.
Definitely not the most compelling argument, and I could definitely still see ADHD's point being right, but from the little I've seen and read, I'm leaning towards Salad being pretty broke.