Bangladesh was part of India and is mostly Bengali in culture, same as they other side of the border. This line about them being Bangladeshis and not Indians is really ill informed as it implies they are somehow not authentic, based around a political border
That’s not quite the truth although it appears to be received wisdom in the UK.
Of course it’s wildly more diverse than our high street fare but a lot of the fundamentals are the same.
As for catering for local tastes, the Indians do not exactly the same thing as we do with their cuisine with...