Not just ready for production apps, ready for the announcement of Fuchsia as the replacement for Android. "Did we mention that Flutter is THE app-building tool kit for Fuchsia?"
This is one of those cases where you have to remind yourself about Google's casual overuse of the term "beta". Because one generally does not associate a "beta" with being "ready for production".
I would argue that the whole purpose of beta releases has always been real-world, production use by risk-tolerant users, just not by the median user in the target market.
I suppose that's a reasonable argument. Although developing your app on a beta release is probably a somewhat-incredible case of that, as your business may end up dependent on something with no reasonable expectation of reliability or long term support.