What's the point of the complaint? Is there anything better that is commercially viable?

Your Linux based dream phone is not going to sell more than 10 units.

I think they might be saying that there's still no supported way to build a native-code app on the Android OS. It could be construed as a plea to make that happen in order to unlock greater performance, not necessarily a desire to have a DIY Linux-based OS option.

Ignoring the native vs java runtime interface application difference between Android and iOS, which the top poster was was referencing.

Your Linux phone statement is a fallacy.

Ask FuriLabs how many of their phones they have sold.[0] High confident it is more than 10.

FuriLabs moved their batman, battery monitoring application, from Python to C and it really improved performance. Native applications really do keep resource usage low and is beneficial.

[0] https://furilabs.com/

I believe the comparison is with iOS not Linux. Android is Linux after all. It’s just that most programs don’t get to run a that level of abstraction, and instead run on top of a jvm. At least in iOS the code does seem to be able to be more efficient due to to higher usage of natively compiled code, which is what I think the op was complaining about.