This article seems a little biased, there are plenty of good, inexpensive phones that release security updates on track with Pixel and Apple. Is it possible that this article seems geared to please advertisers such as Google and Apple?
"Among the top 10 smartphone makers, nearly 96% of Nokia smartphones, sold cumulatively since Q3 2018, is already running on Android Pie or have had an Android Pie update issued to them. Samsung closely follows Nokia with 89% and Xiaomi with 84%. Xiaomi is good at ensuring its mid-price range products launch with the latest version of Android," per Tarun Pathak, Counterpoint associate director.
Next, I am not sure what onecommenter's beef is with Lenovo. The only connection that I could find linking Lenovo to the Chinese Government is that Lenovo is a publicly listed company with headquarters in Beijing, China, and Morrisville, North Carolina, United States. The company does a lot of business in the US and has never been called out by the US government for spying or for selling technology to Iran. I have a Lenovo product in my house that is actually somewhat old and it still receives occasional security updates.
China is an open global market for consumer electronics. Lenovo and Xiaomi are competing in China against Apple and Samsung. These companies would not survive if they could not meet the expectations of their customers, with Xiaomi, and One Plus in particular, both companies have built up a cult-like following by catering to tech gurus such as myself who are fans of modifying the OS with custom Operating systems called custom ROMs.
we are able to remove all advertising and use Android open source, along with Google Apps, which can operate only under strictest protocols. In addition, it is quite easy to keep updated with monthly security updates released by Google.
In addition, all of the these devices can be encrypted and once a device is encrypted, all user-created data is automatically encrypted before committing it to disk and all reads automatically decrypt data before returning it to the calling process. Encryption ensures that even if an unauthorized party tries to access the data, they won’t be able to read it. This experience has also along for me to personally review open source provided by the companies list above, I can assure you that nothing nefarious is happening.