100% agree it’s a huge mistake to water down Rust’s `enum` and `match` when teaching Rust.

If anything, these concepts (algebraic data types and pattern matching) are by far the highest “ROI” features to learn of all: they’re super easy to learn, intuitive to read and write, immediately useful, and unlock a level of rich, expressive, inherently robust code not possible in many other languages.

However, I do agree with the author that the borrow checker is the first area of “friction” for most, and so suggesting more liberal use of cloning is a completely fair strategy to make the learning curve less steep for beginners.