Knew about it? My guess is these were Fed-mandated CPU backdoors, which are now out there only because the secrecy of their existence has been compromised (for example, see https://i.redd.it/gtsboykb98b01.png).
While I love me a good conspiracy, I find it hard to believe that every OS developer was caught unaware of this. If they weren’t, they’re complicit. If they were, they were incompetent.
