In any actual field of engineering, building everything on systems that fail-open this way would be unacceptable. Universally relying on CPUs that leak side channel everywhere because It Go Fast is like building with asbestos and cardboard. Meaning completely safe in a controlled environment, and often accidentally safe outside of it, but dangerous as a factory default, because humans' factory-default is to make questionable decisions without reading the manual.

I can't wait for whatever cock-up finally takes down the internet and kills enough people that, once the smoke clears, "move slowly and don't break anything" becomes a normal career path, rather than a prayer recited by jaded security professionals dual-wielding rolls of duct tape.