> Onshore engineers flying home to India due to a stomach ache, instead of seeing a doctor for free in the host country due to being afraid.

This feels like an exaggeration to me, although I'm open to hearing specifics to the contrary. I know of (non resident) immigrants who delay medical visits and treatments until they get back to their home country, but flying home (spending a good deal of money on air fare) for just a stomach ache sounds pound foolish, which immigrants generally aren't.