Don't know about 'naming and shaming' if they sacked every captain that allowed that on Biman, there wouldn't be anyone left.
Happens all the time in the Haj.
Mind you nothing surprises me here, passengers are subject to video of prayers in Arabic every flight, the nationality of vast majority of pax is Bangladeshis (yes I know most are Muslim but . . .)
There are many passengers (Haj) that don't even know how to use toilets, yet are subjected to prayers in Arabic . That comes before the video on how to use the toilet, wash basin and how to lock the toilet door though.
Hmmmm