The Xiaomi Mi 8 was the fastest-selling Xiaomi device of all time, it's estimated to have sold more than 20 Million units.

It was so crucial to Xiaomi's userbase that they supported it with updates for almost 8 (!) years.

So yeah, sounds feasible...

Mi 8 has a very good camera and battery life I am guessing it could be used as live streaming phone in china so still useful despite being an older device

I have an Mi 9 SE with Lineage and it's pretty well supported so the Mi 8 might just be as well...

Likely phones used in massive phone centres