Although the author talks about Rust, I interpreted that point as generic. Rust happens to have characteristics that the author likes, such as static typing and

Although the author talks about Rust, I interpreted that point as generic. Rust happens to have characteristics that the author likes, such as static typing and declared "exceptions" in the form of Results. I agree that languages with invisible program effects are harmful. The author said it another way as "Inconvenient knowledge is better than convenient ignorance". I've been bitten many times when using languages which have weak types and perform implicit type conversion. I much prefer to know exactly what type of variable I'm using and perform explicit type conversion instead of having the language "take care of it" for me.