I am watching this project with interest. It's impressive that they're doing such titanic work. However, I'm highly skeptical that they can create a real rival to established browsers. I'm sorry for telling this, but Web standards are simply too complex and huge. Ladybird to Chrome / Firefox is almost like Wine / ReactOS to Windows, that last 3-5% of gap actually differentiates a normal browser from a browser that is…
I think it is still a bit too early to say that. The most difficult part is to ensure the security of the implementation, and not just the checkbox compliance against standards. So when this survives the swarm of pentesters, it will be a absolute titanic work. Otherwise it might be too risky to use.