I'll answer very briefly, partly because I'm not a lawyer.
Like you, I find that very ironic, especially when you consider the other qualifications that are checked. When you apply for a judicial position, you need a set of qualifications, including membership in the bar association, which I assume requires some checking. I find it ironic that this is an element that isn't considered a qualification, but rather an asset. Like you, I'm surprised to see there isn't a process for checking whether the candidate has that asset.