Also the biggest issue with Chinese stuff has been software. Shimano's is garbage, and shows its 20 year old roots. SRAM's is adequate, to put it kindly.
Do you mean that Chinese software is better, or worse? Issue implies bad, right?
Because I'm actually super happy with the ltwoo software. The fact i can, with 1 click, choose the # of gears is wonderful (11s seems to be easier to calibrate and live with than 12s), and the app works super well. Gear protect to avoid cross chaining is awesome, and the suuuuuper fine adjustment of individual gears works wonders. Which, for anyone wondering about ER9/X, you must make peace with the fact you'll spend time adjusting gears, because it's completely agnostic to everything (# gears, chainrings, cassettes), so it takes time to get it to shift just right. But it can shift just right.
I have a friend on DA di2, he found out 2 weeks there was an app for it

His drivetrain often goes clunk clunk, he's not the best add for DA

He's a complete Luddite, we like him.