>>31
MIPS is write once, run nowhere (alternatively, run on qemu on x86)
>>32
Using nonfree BIOS and microcode is an arguably worse plague, since it limits what the user can do with the hardware they paid for (unlocking features, overclocking, disabling forced DRM),
Since MIPS is practically dead, I'll only argue that ARM is not yet free of anti-GNU sins as its 3d accelerator still requires binary blobs to run.