But that argument revolves around the growing importance of the Microsoft software store. Its actually an argument between ISVs and Microsoft about how much control MS can have in software distribution and security.
Isn't that a performance concern though? Especially within the context of a react native implementation that environment is already going to push you way above what is achievable with C++.
If we're talking a 5% reduction in the net heap usage for a react native app at the cost of substantially more error prone code, is that really a win? Hell, make it 10%? These apps still readily fit in mobile hardware, and you wouldn't be using react native on a Pi or other more tightly resources embedded system.
I'm sure at least some people think C++ is helpful as a hedge against this.