Aside from the discussion of JS and React Native, I want to highlight this:

> Perhaps more importantly, your software development platforms also shape you as a software engineer. A software development platform encourages (or forces) the use of one language over another, prioritises certain architectures over others, requires using specific tools and workflows, and marries you to an entire ecosystem and its developer community.

People talk about the "right tool for the job" and "good developers are polyglots." This is true to an extent, but there are still communities with different priorities, and they often form around languages and tools.