I fail to see much difference between installing alternative OS on your PC and installing third-party software.
I fail to see much difference between installing alternative OS on your PC and installing third-party software.
Building these firmware images is something you are (usually) only equipped to do under NDAs from the silicon manufacturer (or only done by request from the manufacturer).
My understanding (and what I have gathered from previous threads on the subject) is the FCC is going after the embedded radio firmwares, and mistakenly (or due to extreme lack of knowledge) named OpenWRT,DD-WRT as offenders.
Otherwise, the effect of this would be to outlaw PCIe and USB WiFi, Bluetooth etc. cards/adaptors unless sold inside a computer with a locked bootloader.
Lenovo already does this for laptops, you have to use a Whitelist Wifi card, they claim it is to comply with existing regulations from the FCC, which this will expand.
It is that wifi adaptor maker that is responsible for ensuring that the radio stays in compliance.
The laptop maker generally will only need to deal with the rules from part 15B, unintentional radiators. The laptop maker won't have to lock down the laptop OS.