I swear it's forbidden by the language licensing to write any novel software with it. Actually I'm also pretty sure it disproves writing software by oneself in favor of asking others to (re)write their software in it.
It's nearly impossible to have an idea that is truly novel and has no prior art. Even if it isn't the exact same thing, you can see the ideas that inspired this one. All of us are standing on the shoulders of giants all the time.
But you've missed a couple of reasons why Rust rewrites are popular. Rewriting in Rust is proven path to better performance (Python codebases pandas -> polars, black -> ruff) or better security. C/C++ codebases like FreeType being rewritten in Rust for security (https://developer.chrome.com/blog/memory-safety-fonts). What should people looking for performance or security do to mollify you?
You are asking why aren't completely new ideas being implemented in Rust? They are. Check out https://rerun.io. I could be mistaken, but I haven't seen anything similar to rerun. And that was implemented in Rust. Maybe these aren't visible because there genuinely are so few things that are completely novel.