Fortunately the overwhelming majority of the community isn't afraid to call this post out, judging by the comments at https://www.reddit.com/r/rust/comments/63ijkw/rust_optimizat... :) I've never seen the author engage with the Rust community in any great capacity (they're not a regular in any forum that I frequent, and I can't name any libraries that they've written), so I wish he'd take the time to learn Rust more before blogging about it.