China has a certain amount of financial control of most of Asia, of course they wouldn't be banned in Asia, of course they would be highly promoted in Asia, it serves their interest. But, the point is, there is a very good reason why they were banned, because China has Huawei build things into the hardware and software that definitely are a major risk to the privacy and security of any users or corporations that use them. They wouldn't be banned and considered a security risk for no reason at all. This also somewhat applies to Xiaomi devices as well. This really applies to all hardware/software coming out of China on some level, some more, some less.
Dig deeper than just reading articles on tech websites, you'll see.