Dude, these people leave the country in the first place and try to tell us how to do things.
If the guy is serious about joining the services, he would have visited the UPSC website.
One of my friend's classmate from US is returning to India to pursue Civil Services after education there.
These people have no idea that most of those selected in the Civil Services exams have left lucrative jobs in India and Overseas [from Engineering, Medicine and Management backgrounds].
They know its easier to comment on an internet forum than going through the Syllabus of UPSC Civil Services exam [which runs in pages].