You don't know if it's a "valid loophole" until it's tested in court. You could later find yourself under prosecution, and possibly eventually in jail and/or with a business-destroying fine. If you are willing to risk that, because you think "the value of talking is greater than that of your freedom" -- I think that's actually quite honorable and respectful!

You could of course violate the terms of a sealed warrant or other enforced-confidential court order without a warrant canary too, although of course that goes from "we're not sure if I can get away with it", to "this is definitely going to be a really big legal battle, that _maybe_ I can come out of, if there's enough political uproar."

Using a warrant canary _might_ end up being just as much legal jeopardy, we're just not sure.