> unwrap(), expect(), bad math, etc. - this is all caused by lazy Rust developers or Rust developers not utilizing the language's design features.

The factually incorrect part of this is the statement that use of `unwrap()`, `expect()` and so on is caused by X or Y, where X is "lazy Rust developers" and Y is "Rust developers not utilizing the language's design features." But there are, factually, other causes than X or Y for use of `unwrap()`, `expect()` and so on. So stating that it is all caused by X or Y is factually incorrect. Moreover, X is 100% insulting when applied to any one specific individual. Y can be insulting when applied to any one specific individual.

Now this:

> We shouldn't be using unwrap() or expect() at all.

That's an opinion. It isn't factually incorrect. And it isn't insulting.