Actually, given the situation; the break-up of Pakistan was inevitable.
The PA not only had very limited intelligence on Awami/MB activities, but also fell critically short on logistics. Given Indian support, a naval blockade and geography (a very critical factor), the PA would not have been able to sustain against the guerrilla war.
The only difference being that it would have taken longer, and costed more lives on both sides. It was a matter of consequence for India to intervene on the Eastern Front.
I also happen to come across a story where they burned pictures of Kazi Nazrul Islam and praising pictures of Rabidranath Tagore because Tagore "looked" like a Muslim whereas Islam "looked" like a Hindu
They were culturally worlds apart. But I'd say it was lack of knowledge on their part.
That is interesting.
Nowadays though, I find it odd that they do not acknowledge enough toward the contributions made by India and the sacrifices of its soldiers that aided them in their fight like as if the MB are the star or something. A genuine acknowledgement that is. If India hadn't intervened, many wouldn't have probably been alive to have that gathering.
What politicians exchange to others is of no concern. In fact, it is irrelevant to the truth.
Coupled with other forms of hypocrisy and arrogance, I tend to avoid such gatherings and matters in Bangladesh these days. I maybe ignorant about the gathering you are referring to, but usually, they are filled with fake enthusiasm and cheap propaganda for the sake of vested interests.
Bangladeshis generally know very little about their own military history, and how it truly came to be. And this lack of knowledge is often misused by those very vested interests.