“but neither do you see piles of shechted chickens waiting to be dealt with. ”
Um yes you do if you care to look.
As I said you can still see them if you like.
Google is your friend.
How long do you think shechted chicken lasts in the sun?
How many times a day are these invisible “regular collections” taking them “somewhere” to be processed? That’s a lot of invisible refrigerated trucks you’re imagining driving around Brooklyn