[mikepurvis]

While that's true, editions are more about leaving legacy decisions behind while keeping the backward compatibility promise.

Even if you're in one of those unconventional settings (say, a bare-metal microcontroller or something), you'd probably still start from edition 2026 and mutate your settings accordingly, rather than using the defaults that are 26 years old.

[tialaramex]

Yeah, that's important. Rust's 2015 edition is worse, not just different from what you'd write today with 2024 edition. There's a clear direction of travel.