Magna Carta didn't make us a just society, it was the start of making us a just society.
Being a just society is not a boolean. We never got 100% there. Nor is it along a single dimension -- you could argue we were more just 50 years ago, as long as you were white.
> could argue we were more just 50 years ago, as long as you were white
Well that is certainly one take. I really don't see how you can argue that position in good faith but I won't spend energy to refute it since you didn't actually argue it at all beyond making the supposition.
Being a just society is not a boolean. We never got 100% there. Nor is it along a single dimension -- you could argue we were more just 50 years ago, as long as you were white.