I think the issue isn't that much that no reasonable hardware can archive it, but that the "compromise" actively encourages not just insecure systems, but also making systems
even less free.
It's a bit like saying that a Windows notebook is only "free" if you can't install other systems and updates are disabled. There probably is more or less reasonable hardware which could implement these restrictions, but such hardware would in no way be more "free" than a notebook where you could just install Linux.