alt Hacker NewsI have to be honest that I don't really understand the appeal of Ladybird from a purely technical perspective. It is written in C++, just like all the existing engines (yes there is some Swift, but it is negligible), so what benefit does it provide over Gecko or Blink? With Servo, I can see there is a distinct technical design around security and parallelism.
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There is more to a project this massive than its choice of language. For me though it's mostly about breaking from the monopoly and putting a check on Google's influence over browser space.
Rust does not produce magic in the assembly code. It does not even produce faster assembly code. Rust toolchain on it's own does not even produce assembly code. It just passes that to LLVM that does THE ENTIRE optimization. Without LLVM (written in C++) doing the heavy lifting, Rust is probably slower than V8 (written in C++) running JavaScript. There's no technical marver in Servo compared to Ladybird. I don't understand the yapping how a language makes projects good/bad, despite it being proven completely false again and again. The appeal is in independence and politics around the project.
Many many factors to consider. Simplistic take: KHTML was picked up by Apple because of its clean design and codebase; there's an extra 30 years of accumulated improvements in C++; you don't write stuff in Rust 1.0 either.
Also: Andreas has worked on Webkit/Blink. He knew what he was doing when he started the project, even if it was "just for fun". Linux started under similar circumstances.