I am pretty sure I just want my app to run on Android, iOS, and web. If Flutter's vision is making it possible to also design to TVs, smartwatches, thermostats, doorbells, fridges, etc it means that there will be trade-offs, added complexity, overhead, design choices to support that "ambient computing" vision.
I don't want any of that, and it is good to know that in advance. RN it is.