The pushback comes from the idea to rewrite all old tools in another language just because you can. Instead of creating new projects and using the new language it feels like the most rust projects are rewrite from old projects. And the most projects you have read about on hacker news in the last year 'I made xy, but in rust' are already abandoned. It's just a trend to write something already existing in Rust just to learn the language and then release it for productive use.