You need not be so offended, it's not even about your text.
You can use search for the next criteria: why you should use rust
This informational noise is very disturbing and forms a somewhat distorted perception of reality, because it profanes the choice of a very complex instrument (which is just a small part of the huge instrumental set). And thanks to this noise, the obvious boundaries between the apparently different "must" and "can" are lost.
Getting hung up about the choice a single word in a comment is a little weird and makes you appear rather annoying.