I am going to elaborate on the bold parts.
Yes, Bangladeshis are mostly Bengali Muslims, and that's just a general description.
But the question is: How does a Bengali Muslim identify himself as a Bengali Muslim?
Identity comes with culture, and with culture comes with many things.
Whatever we struggled for during the Liberation War, we tended to see culture from visible aspects such as language being the major one. Then there was the issue of human rights and the rights of ALL Bengalis regardless of religion, and that is a slightly different matter.
There are invisible aspects of a culture such as values, norms, attitude, perception, and discipline. Indeed our culture is a high context one, where the environment determines how we should express ourselves to a high degree. It is these invisible aspects that are very important in any culture. Do Bangladeshis for the most part understand these aspects? How he understands himself determines character.
The Americans adopted Roman culture, the Persians have their own culture, the Japanese have their own culture, the Chinese have their own culture, and they all have come a very long way. The question is: how far have we as Bengali Muslims come? If that identity is only 40 years old, we have a long way to go to be......complete.
And as far as politics go, parties like Jamaat do not make it a secret that breaking away from Pakistan was a mistake, and yet still fly the Bangladeshi flag while they did openly lobbied against the creation of Bangladesh. According to unofficial sources, there were even some Bangladesh Army officers who discussed with the Pakistanis about reunification! Of-course, the Pakistanis rejected the offer. Why these people are still around?
How can we say Bengali Muslims are confident about their identity? They (Jamaat) are still following an outdated ideology (not Islam itself), that was obliterated forty years ago. And even if 10% of Bangladeshis support the likes of Jamaat, that's still a lot of people if we take into account the country's population.
The Awami League has no identity, they are merely a mafia party. And gangsters will always be gangsters.
So, given that this young Bengali Muslim identity is just 40 years old, then I must say have a long way to go to realize the point of our existence in this world and beyond. And that'll take time. Cultural change for the better takes at least three generations if we look at it from a broad consensus.
And as far as Muslims in India go, how are they different from us? Was there really any point in the partition? Maybe we all just could have lived as the United States of India. Please, remember that the All India Muslim League was founded in Dhaka! And not in Islamabad!
Anyways, the past is the past, and we should look forward to the future. However, given our political environment, I wouldn't say that the key political parties are helping. And we are the idiots voting for them.
Long live everybody