The whole world including India has accepted the current interim government in Bangladesh. Sheikh Hasina was not an elected prime minister. She rigged the election to be the prime minister of Bangladesh.
Arakan army has done nothing to Bangladesh. If they want to succeed they will need to keep good relation with Bangladesh because they cannot afford to have two enemies(Military junta and Bangladesh). If Bangladesh gives support to the military junta, Arakan army will die like pig.
You succeeded in 1971 because of Mukti Bahini's support. You fought for only 13 days whereas the Mukti Bahini fought against the Pakistani for 9 months.
9 Months>13 days.