As a corollary, working with RN quite a lot, we just built an app for a client that was end to end finished and fully approved to both apps in a month, including pretty deep feature work and redesigning multiple screens. It includes the latest liquid glass native UI as well.

RN is a mess to get into, but once you've found a good stack you can really fly. We are working on a starter kit based off our experience that I think should represent the best possible starting point once it's released sometime before the EOY.