That's closer to mastery of a language than merely having 'learned' it. To me something like B1 is a much more important threshold, since it's the point where you start to be able to use a language in an uncontrolled environment. Obviously becoming more practised and fluent is important but to me that's a less important difference than being able to use the language for more than some predefined scenarios. If only because it allows you to learn unsupervised.