Not to argue semantics, but that pattern is still called two-way databinding in my neck of the woods. In this deprecated page from the official docs, two-way databinding is defined as:

> Two-way binding — implicitly enforcing that some value in the DOM is always consistent with some React state — is concise and supports a wide variety of applications.

[1] https://reactjs.org/docs/two-way-binding-helpers.html

Well, that mixin has never been the standard way and has been deprecated for years (and for good reasons)

The mixin is irrelevant to the point I was making. :) The point is that even the official React docs defines two-way binding as I describe it.