Article is basically a pretty wrapper around an Alan Kay quote and Paul Graham’s famous blub programmer quote. It neither explains what the shift in perspective is nor how the author is trying to push through it.
At least it mentions Rust, I guess?
The perspective shift is in how you have to incorporate ownership into your design, eschew many styles of structuring your program and data (e.g. no parent pointers, no long-lived aliasing), and always satisfy the borrow checker.
It takes more finesse to implement a system in Rust, but the system will probably turn out more robust.