The answer is right there in the quote by the Supreme Court. Commercial speech is not protected if it’s misleading. So by definition, a law that bans deceptive speech is constitutional.
In the case of these plaintiffs, maybe their speech is misleading and maybe it isn’t. That’s up to a jury to determine. If it’s misleading, then they are breaking the law. If not, then they are not breaking the law.
But either way, the law stands. When you find someone not guilty of a crime, that doesn’t mean you throw out the law against the crime.