We're well past absurdity on this line of argument.
Given:
A = a goal of just implementing just the latest and most important specs
B = shipping something they want people to use
There is no browser team, Ladybird or otherwise, that is A and not B, or, A and B.
For clarity's sake: Ladybird doesn't claim A.
Let's pretend they do, as I think that'll be hard for people arguing in this thread to accept they don't.
Then, we know they most certainly aren't claiming B. Landing page says it's too unstable to provide builds for. Outside of that, we well-understand it's not "shipping" or intended to be seen as such.
i would say neither chrome or firefox score particularly high in any of these