The burden of porting the software is on whoever is trying to run it on a device. The burden of letting the consumer run whatever code they wish on the device s

The burden of porting the software is on whoever is trying to run it on a device. The burden of letting the consumer run whatever code they wish on the device should be on the hardware manufacturer (aka document how to upload the firmware and pass any boot signature checks). They have no responsibility beyond that. To suggest that the manufacturer should be forced into porting arbitrary software to their device frankly smacks of a strawman argument at best, and at worst feels like a deliberate misrepresentation of those who wish to have fully hackable devices in order to ridicule them.