Perhapds their stance on user privacy?
"OnePlus is tracking users actions without anonymizing data" - https://tech.slashdot.org/story/17/10/10/227207/oxygenos-telemetry-lets-oneplus-tie-phones-to-individual-users
"a new report says that there's still a OnePlus app that can grab data from the phone and send it to servers in China without a user's knowledge or express consent. " -
https://tech.slashdot.org/story/18/01/27/0013220/oneplus-is-again-sending-user-data-to-a-chinese-company-without-user-consent
Biting the hand that feeds IT
