Proud to be an Indian?

On Independence day, Republic day I find all my Indian friends post patriotic messages to indicate that they are proud to be Indians. And when I looked at these messages and videos I thought these people in spite of living away from our country they all are still very proud to belong to my country.
But yesterday there was a weird thing that I experienced. After this incident all my thoughts about patriotism have gone upside down or let me be little polite and say that my beliefs are little shaky. It was freezing and drizzling and I was waiting for bus number 35 to get back to my apartment where cooking task was awaiting my arrival. Then I could see the bus approaching me. As the temperature was 6 degree centigrade the bus arrival made me feel similar as a hungry person who hears to the bell rung by a pizza delivery boy. I entered the bus and felt warm. As I got back to normal from shivering state, I noticed a group of Indian guys in front of me. They were conversing in Hindi. They were loud enough for the entire bus to hear them. There was one guy in the group who spoke 75% in the conversation and had an unusual accent. Most of the time the others just nodded their heads in agreement to him. The topic of their conversation was the reason for me to compile this blog. They were discussing the ways to get PR in United States. The guy with the unusual accent was giving lot of simple ideas. One of his ideas was to get married and have babies in US. According to the law, the newly born baby will be the citizen of US and parents have to stay in US to take care of the baby for certain number of years. After spending those years the parents will have a very high probability of getting the PR. By their conversation I could infer that they were desperate to be the citizens of US. If you look closely most of the people who are working or studying here have the same intention. There are exceptions everywhere and that is the reason I used the word “more” and not “all”.
The only motto of coming here is to stay here forever. Be American in every way possible, adapt to their food, culture, ethnicity etc. How can these people claim themselves to be proud Indians? , When they are ready and willing to change their nationality, citizenship, culture, belief, their root. It just proves that they are not faithful to their country. They are changing their identity and breaking all relationship with their country and establishing a new relationship with a new country. It is equivalent to changing the parents. My point is why people wear patriotism mask. They can always frankly accept the reality.