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 use the best tool for the job. Ecosystem matters. What are you planning to build?