Well of course they are going to use those bikes, they are cheap and last.
Where i live, the chinese are the prefered one for delivery job, cheap and cheap to fix.
The Police and Gendarmerie, here use KTM 390, Yamaha TDM 900, BMW, Chinese CG299 motorcycles
The chinese are slow next to the others one, but they are one that can withstand the daily abuse much better than the other....
Sames goes for delivery job.
People can say what they want about the Chinese CG... but if they have one thing, is that they keep going and going.