A defense attorney defending a guilty criminal doesn’t typically pledge financial and moral support and state publically that they are proud to stand with them (not for, with). EFF is tying themselves to IA far beyond just acting purely as a legal representative.

Taking a political stance that the existing law is bad is not only not illegal, but it is one of the few things that is very explicitly legal. Doing so does not put you on the wrong side of the law. This includes when your political actions involve making statements in support of, defending and funding the legal defense of those who have broken the law.