"[...] as far as we know, no other browser can do this today. Here’s a text animation while JavaScript blocks the main thread in 1.5 second bursts, with Ladybird in the top left:"

This is amazing!! I'm really surprised no other browser is able to do this. Is there an implicit "security" issue with it, or maybe standardization when it comes to keeping some values from DOM-Javascript in sync? Or simply an oversight in their part? In any case, congratulations to Ladybird's team. Computers are so much more capable of raw performance and computing, and it's nice that some developers out there do care heavily about it