I would say yes. I have experience teaching Rust to ~20 yo students of Java, and they are able to be productive in Rust within a semester. Your median Java and C# dev should be able to use Rust. Dunno about Python devs.
But I want a fast on-ramp, quick iterations and clean looking code. (and went with Kotlin because of that -- I like Rust more myself, but I have a business to run, so tradeoffs)
But is it general audience? (can every Py/PHP/JS/TS/Java/C# dev become productive in it quickly?)
Also: if you want quick (re)compiles on a larger codebase, Rust is not for you.