As you may know, there's a native side to React Native apps and your app's main logic runs in JavaScriptCore. That logic is in a .jsbundle in the app bundle, not technically in the binary. The JS code is shipped with the app and only updated through the standard review process.
Section 4.7.4 - https://developer.apple.com/app-store/review/guidelines/#third-party-software of the App Store Review Guidelines means to me that an app having Real Money Gaming and running "code" in JavaScriptCore is disallowed.
I could see the intent instead being that all code must be in the App bundle, as React Native apps in general are numerous on the App Store.
Could anyone please clarify or confirm?