> Besides, it's the hardware's job to optimize for the capabilities of the SDK.
You can't possibly blame the hardware manufacturers for how poorly React Native runs. Even if the CPU engineers wanted to target React specifically and make it run better somehow (and you seem to think they should), where would they begin? React sits on top of 35 layers of software abstraction and runs in 2-3 virtual machines, how could they target RN?
Assuming they could add magical instructions that benefit React somehow, who's going to patch the 34 lower layers for React to benefit from it? The manufacturers? The React team? You?