"Is the AMDGPU driver considered Free Software?"
Hah; no. When the proprietary components aren't present it falls over and
dies.
"Linux-libre supports all hardware that is supported by the kernel itself,
right?"
No, because some of those things require proprietary junk in order to
function.
"...also came across Purism, they're working towards RYF-certification,
though they're not quite there yet. So, I could either wait for them to make
a fully libre laptop"
Not going to happen with Purism. Or anyone really. Newer Intel stuff has
fatal freedom problems. So anyone's goal of Intel + Modern + Free can't
happen. Intel is really a sinking ship for software freedom. It's time to
evacuate the Titanic: https://jxself.org/titanic.shtml
