> Showing how far one can go with modern AI tooling does matter only a little when all you do is looking at Chromium/Firefox code and recompiling the logic of it in another language.

Is that what Ladybird does? Can you point to a real world example? From the blog post, it seems there are real world differences (look at the performance when resizing with heavy JS!).

You're also mixing arguments. The original arguments against ladybird (which I vividly remember as I loved following them back then) were that it would be impossible to arrive at something that works for all use cases. Ladybird would be able to render toy websites like hacker news, but nothing of worth.

It seems they were proven evidently wrong.