You must be seriously deluded to say that. Yes, for the natives that live near the river they might eat asian arowanas back in the days. Same with Arapaima. And with the almost extinct status do you seriously think there is anymore wild ones in the river for anyone to eat? If there's any caught they would be sold off immediately as the value can earn them x100 more than they eating the fish.
And no, the thousands and thousands of asian arowanas coming out from various farms do not get eaten either. Do you go to aquarium to buy a over 100bucks fish with little to no meat to eat? You may see some videos on youtube of people eating asian arowanas but these are usually already dead aquarium pet or those they caught from individual fishing. If eating, there is any, it is not the reason, not even the tip of the iceberg to why it's almost extinct.
On the side note it always amazes me to how some people from the western side of the world still habour the idea of how every non-western people are people are low class and seemingly vultures who devour every single thing crosses their path. Maybe it's time for you to grow up and take sometime off and travel outside to see how the world is now.