Earlier quoted context omitted.
That's not a strong argument, IMHO, since it would similarly condone any other law-breaking activity where the perpetrator disagrees with the law. It's not as if copyright wasn't controversial before or the IA's actions here have any realistic prospect of moving the needle. If you're talking about civil disobedience, that's a different matter, but one of the key things about effective civil disobedience is that large…
You don't get to large numbers of people disregarding the law before first having a few.
Besides that, how many other Internet Archives do you think will follow the one we've been discussing by also flagrantly violating both the letter and the spirit of copyright law?