FYI - There's some neat ways you can embed React components inside Rails templates. Basically - embed the props in a template-managed `script` tag, and use Stimulus to mount the react code, passing in the props read from the DOM. Now your React is pure state-to-view, no need to synchronize anything, - it's really just a handful of React components instead of a full React app.

That said, AFAICT, there's just two advantages:

1. Those annoying little UX doohickeys that actually DO want that level of interactivity

2. You can use any of the vast library of existing React components (for me, that's been react_big_calendar)

As a bonus (and, why I rolled my own, since `react_on_rails` doesn't support these), and with a bit of tweaking:

1. It plays nicely with Turbo. I can use Turbo to update my React props and it just... works.

2. You can embed a template as a child of the React component.

2a. This also plays nice with Turbo.

It sounds a little screwy, but so far it's working well, and it feels like it lets me use the right tool for the right job - aka, Rails for everything except the stuff with extremely high interactivity.