A significant barrier to getting platforms to Tier 1 support for Rust is actual ...

A significant barrier to getting platforms to Tier 1 support for Rust is actual hardware to run CI on. Tier 1 is an extremely high bar for support.

I do my job at work every day on a Tier 2 ARM target, and in practice, don't notice any difference from the Tier 1 targets. YMMV of course.

Thank you, that helped me put it into perspective!