While I agree that Rust changed a lot, it was mostly fixing edge cases (like borrow checker limitations or associated types not being allowed to have generics)

While I agree that Rust changed a lot, it was mostly fixing edge cases (like borrow checker limitations or associated types not being allowed to have generics) or obvious missing features in the language (const fn, const generics, async await) that have been known for a long time. Most of these have been implemented since then (at least in MVP form) to the point where there's barely any new ideas anymore and most old ones got implemented. So Rust really feels like it's nearing a "point of completion". You can see this with the Rust 2021 edition as well that contained very few changes.