This is slightly complicated to explain/answer, but I will try.
This will stop being a problem once/if they move here and acclimatize to the economic realities of Connecticut, one of the more expensive states in the country.
The economic realities they currently live in are a world apart. This is not the rich cities in India I am talking about, but the rural hinterland where 70% of the population live. 25 years ago, my family went without their milk ration for 2 months to make sure I can afford to purchase used copies of Engineering textbooks for the princely sum of $20. In that reality, spending $50k to buy a house is what really rich people do after working hard for 30 years at their really good business or job! $100k translates to a king's ransom that no mortal human being should have access to and it will turn you into an evil dragon guarding his lair if you do.
Once/if they move here and acclimatize to the realities here I will be far less worried *them* learning about my position/salary. I think at that time *they* will be the ones stressing about how to firewall the raw, bare economic differences from their acquaintances back home.
If they happen to learn about the raw numbers *before* they adjust to the American cost structure, then I'm afraid they will be likely give that information off to their current social circle directly or indirectly. That would cause *them* a lot of problems, e.g. long lost relatives suddenly showing up with an ask for a loan to tide them over their hard times.
Summary: They will gain the perspective necessary to deal with the raw economic differences once they move here, and this will stop being a problem.