I looked around and could not find an offical source of recomendations of when to use or not Flux, other than what you mention. Maybe its in a talk and its not indexable ? I think Flux is likelly being used in situations where just bringing plain DTOs from the backend and binding them to a template and render is all that is needed.

I think it would be huge if it was be clearer what are the tradeoffs of Flux and when to use it, what are the gains, Does it make sense to use it in a mostly read only dashboard / monitoring charts application, if the data is only shown at one place?

I suggest if its mentioned in a talk can you link it here so that its easily googleable, if not a brief reply in this issue would be great. Wouldnt dare ask for a blog post as i know you are busy with your startup. Thanks for Flux!