or maybe, just maybe, you know nothing of optimizations, so you just go: impossible!

the optimization you are describing is premature - you don't need rust to productionize your models and in most cases you don't even need to be coding in a low-level language at all.

I mean, it'd be easier to change my mind if you had a single reason behind anything you've claimed.

I would love to understand why Rust would be more effective for productionizing ML models than the existing infrastructure written in Python/C++/CUDA.