Rewriting the GNU Coreutils in Rust

Yes, it does. But it seems that it does not require that the scripts still work on the device:

> The source code for a work means the preferred form of the work for making modifications to it. For an executable work, complete source code means all the source code for all modules it contains, plus any associated interface definition files, plus the scripts used to control compilation and installation of the executable.

No word saying that the scripts still have to work on the distributed device. Maybe it is enough if the scripts work for an empty device prior to software installation. This of course does not help the end user as there is virtually no possibility to get hands on such a device.

Therefore, the GPL3 is more specific in this regard. But still, it seems perfectly ok, if any proprietary software on the device stops working in the moment you exercise your rights to install modified versions of the GPL software, which will render many devices useless.