I don’t believe that they’re likely to do GNU/Linux. I bet that they’re going to do a fork of Android off AOSP or something like that.

Android’s had a huge amount of work put into it to make it suitable to be a consumer mobile phone OS, and the companies here aren’t doing this because they want stuff that GNU/Linux does, but rather because they’re Chinese companies worried about a US-China industrial decoupling and its risks for them. Like, they were okay with the technical status; what changed was that they started to worry about having the rug pulled out from them.

That being said, I can at least imagine that helping GNU/Linux phone adoption. So, think about what happened with video games. There were some major platforms out there – MacOS, iOS, Windows, various consoles, Android, GNU/Linux. That fragmented the market. Trying to port software to all platforms became a huge pain. What a lot of game developers did was to target a more-or-less platform-agnostic engine and let the engine handle the platform abstraction.

If the mobile OS space fragments further – like, Android splits into “Google Android” and “China Android” — my guess is that that’ll help drive demand for platform-agnostic engines to help improve portability, and porting one engine to GNU/Linux is a lot easier than every individual program.