There is a flaw in this reasoning.

Nobody ever said that a subsystem maintainer needs to fix Rust bindings.

As Ts'o correctly states, that's the problem of the bindings maintainers.

But there is no problem at all. All that the Rust people want is to be informed about breaking changes. Also they said they're happy to get instructions on the semantics of the C APIs. They seem to want to collaborate. The C people just want them out, as it seems looking at this episode.