Windmills like spectre and meltdown?
I know why. It's because Zig hasn’t proved that it can do what it claims to do.
He said Rust obviously had nothing and that proper privsep was exceedingly rare in languages other than C.
On privsep being rare outside of C? What's the measure? I suspect privilege separation is present or not more based on the type of software, not the language used. And I'm sure you can find bad/good examples in software written in C, Go, Rust, Zig, etc.