The economy of Bangladesh is not very poor and it's also not true that the maximum number of people live below the poverty line. This is true for Indians. Even Bangladesh GDP is higher than India's now along with people's earnings per year. Bangladesh is the number one developing country in Southeast Asia.
What this has to do with the issue of cryptocurrency legalization? And if the GDP per capita in Bangladesh was very high, then tens of millions of illegal Bangladeshi immigrants won't be living in India, without the necessary permit. Bangladesh is just like any other country in South Asia, where the government is hostile to new innovations such as cryptocurrency.