> It will be interesting in the future to read the "oh, Windows 10 is no longer tier-1 !!" when the bell arrives at their windows.
It's certainly bound to happen someday. Rust has a lower bound on official support for every OS, not just Windows. For example, Rust doesn't support compiling for Linux kernels older than 2012.
PS: Good job Microsoft, receive our acknowledgment. Say hello to the busy telemetry guys. /s