I completely agree. I was surprised to learn that language training programs are offered to justices. These programs are not intended for the justices of the Supreme Court of Canada but for those starting out their careers. I have never taken the course, but I have heard very good things about it. The training is available; it is an intensive course in legal French, if I can call it that.
Some law schools offer specialized courses. The University of Western Ontario, I believe, offers a specialized course for lawyers who want to master the technicalities of legal terminology in French. The earlier you learn a second language, the better.