Factually incorrect. People from Dhaka don't eat half as much beef/meat as people from Chittagong/chatgaiyas do.
We have our own beef dishes, chatgaiya specialities.
Indeed, we love meat so much we commemorate the death anniversaries of loved ones by hosting big beef eating feasts every year.. called mezban, a sight to be seen.
The dish is distinct beef curry called mezbani goshto.
From the lower to the middle to the elites, everyone in Chittagong has hosted mezban in memory of a loved one atleast once, if not every single year.
In big feasts, hosted by the elites and upper class, as many 10,000 people are fed or even more at times, huge feast tents are setup.
Everyone is welcome to feast, no invitation needed, only condition is praying for the soul of the deceased.
It is so popular, people I know have flown in chefs to foreign countries to host mezban there.
At a guess ? There's at least 10 mezban feasts in Chittagong at any given week or more... This is excluding the villages in the district.
TL;DR We eat alot more meat than people from Dhaka and the fact that meat is only eaten in Dhaka is a myth. Mind you, I have yet to speak of Kala bhuna, another chatgaiya knockout special.
Did I mention mezbani meat is always fresh, the cattle are bought, slaughtered, the meat cooked and served all in the same day... Cooking can involve anywhere from 10 to 100+ experienced mezbani chefs and kitchen helpers.