Sure I do not have such skills, I am a very noob trying to build a secure console and router, but most likely IMHO the backdoors are targeted to be used from invisible virtualization trojans on X86? I was even suggested to avoid Libreboot on X86 because it is GNU, though for me it is sometimes difficult to understand where trolling is in this area of my interest.
Is not systemd one of such backdoors? Does it include any interesting "features" except so called "init system"?
