[kibwen]

Code only gets read if it gets written in the first place, which it won't if your fresh new language makes it too hard to bootstrap an ecosystem and a community. One of the foundational premises of this year's ergonomics initiative is that Rust code is still too hard to write; a Rust-like language with linear types instead of destructors would be yet harder to write, and would only improve the ability to reason about code in a small minority of cases. I've been writing Rust code since before it was cool to claim you were doing things "before it was cool", and while I appreciate the cases where people have longed for linear types, I have never needed anything more than what destructors provide (which subverts the very premise of your comment, because, for my uses, enforcing linear types would be harder to both read and write). Nobody on the Rust team is pretending that there aren't tradeoffs.