> It’s patently clear2 that the license allows this, and it surprises me that this is rarely brought up in debates about GPL-3.0-only and GPL-3.0-or-later.
It's an interesting avenue, but the ultimate problem is that people die and/or lose interest in projects. What happens to this particular project if Runxi dies, or decides to make furniture out of wood instead? That basically becomes "GPL-3.0-only" again.