tbh i was mostly being facetious and I don't actually think everybody needs to immediately drop Windows (although i do actually hate it). The OP has the exact same problem that you highlighted with my post, which is the assumption that since rust is a viable replacement for C in his line of work, C must be obsolete across the board for everyone, which is a ridiculously arrogant statement.
Rust's tier 1 platform support is woefully inadequate (https://doc.rust-lang.org/beta/rustc/platform-support.html), and even the tier 3 platform list is missing some important targets. And even the platforms that it works on aren't necessarily platforms where it works well enough to be a viable alternative to C. But this guy from Microsoft's Azure who probably only ever writes software for x86 and ARM says C should be considered deprecated because Rust works really well in his specific domain.
tbf the win 11 update finally stopped shilling minecraft in the start menu, although its still trying way too hard to convince me that their app store isnt a complete waste of money that will be gone in a decade.