Ha ha, I think you've kinda misinterpreted his sentence. xD;
Well, it just states that: Bengali is a language native to Bengal. Some part of it is in present day 'Bangladesh' (a country, obvz) while some of it is in India as 'West Bengal'. The old bengal also comprised parts of the indian states 'Assam' and 'Tripura'. Thus, he wasn't wrong. He never said that Bangladesh wasn't an 'independent country'. And yeah, the 'moron' part that I wrote was just for some 'sarcasm', you know. xD;
Can you give me some proof? I still don't believe it, tbh. XD;
xD;