> What about Linux (Android) being used as the prime spyware vector
To deal with that, consider using GNU/Linux phone Librem 5 recommended by the FSF: https://www.fsf.org/givingguide.
> and Linux being used for cloud lock-in
What do you want to discuss here? There is always a possibility to use tools for the evil. Non-free software is used for that, too (much more).