I have a Xiaomi robot vacuum cleaner that was cheap and it's amazing at the same time (much better than other US robot vacuums that I tried before).
I bought my girlfriend a Xiaomi Mi 9T mobile phone, it's working great as well (after hiding the Mi software crap, but I had to do the same on my expensive Samsung 9S Plus as well)
They're saying crap because they're not referring to a Xiaomi phone or vacuum cleaner. They're referring to the 'Xiaonni Vacuum 3800' that's $5 in parts, sold for $500, because people confuse it with the one you're talking about. It's like the issue with Hoverboards a couple years back. The race to the bottom caused battery safety issues, and everyone lost trust in all of them because of a few cheaper ones with crappy charging circuits.
I guess this was true before Xiaomi built a brand by buying up mostly good Chinese companies. Having a few unified brands make a lot of sense for building trust between Chinese companies and people in the world.
Why do you need to say crap?
I have a Xiaomi robot vacuum cleaner that was cheap and it's amazing at the same time (much better than other US robot vacuums that I tried before).
I bought my girlfriend a Xiaomi Mi 9T mobile phone, it's working great as well (after hiding the Mi software crap, but I had to do the same on my expensive Samsung 9S Plus as well)