The issue with your original comment is that it’s simplified on many levels beyond what is acceptable. China has companies working on delivering highest financial output regardless of other citizens and their rights to have fair share in produced goods. They are by no means controlled by workers (why would they accept e. g. 996?) nor creating fair rules to others economically (e.g. Taobao and their alghorims pushing many sellers to sell bellow profitable levels just to maintain visibility on their site). Put it also into wider perspective: China started to move forward in quality of life only after Deng. US system is by no means bad but it doesn’t make Chinese one perfect.

You don’t even realise how strong capitalism is in China.

Those overly negative comments often come from USA. I’ve never had any major problems with self checkout in Europe and I generally go there as it’s faster and you don’t have to race against the cashier. Of course some chains have worse self checkouts, some have better but overall many people like it a lot. Even some older people who are not tech savvy use them.