Rust is perfectly fine to write CRUD apps and the productivity between it and golang is identical. The only issue I would have with growing a rust app in 2022 is the pool of talent to hire from for it. I find the comments about using rust for different projects generally align with what people were saying 10 years ago about golang and with the rise of people being comfortable in golang it's now used in a massive array of projects beyond what outsiders were trying to peg the language to.

tl;dr rust is great for writing all kinds of apps and as the labor pool with rust grows so will it's usage in all aspects of computing.