Following yesterday’s Linux 6.18 kernel release, GNU Linux-libre 6.18-gnu is out today as the latest release of this free software purist kernel that will drop/block drivers from loading microcode/firmware considered non-free-software and other restrictions in the name of not pushing binary blobs even when needed for hardware support/functionality on otherwise open-source drivers.
With Linux 6.18 there are more upstream kernel drivers dependent upon binary-only firmware/microcode. Among the drivers called out this cycle are the open-source NVIDIA Nova-Core Rust driver as well as the modern Intel Xe driver. Nova-Core is exclusively designed around the NVIDIA GPU System Processor (GSP) usage and thus without its firmware the driver is inoperable. Similarly, with the newer Intel Xe driver depending upon the GuC micro-controller without its firmware the support is also rendered useless.
The very silly argument the FSF is trying to make is that device A is not programmable because the firmware is baked into the HW effectively making it part of the HW rather than a separate entity. Therefore it’s a HW limitation and not proprietary software. Device B on the other hand has proprietary software uploaded to it which is not to be allowed under any circumstances and therefore must be neutered. I call it silly because as you so rightfully point out, the firmware blob could be literally the same exact blob, just stored differently