A unanimous denial of certiorari (declining to hear the case) sends a pretty strong message to lawyers and their clients. It only takes 4 votes (1 less than majority) to hear a case, so the fact that there were zero justices interested is a clear message. While it is technically possible that there could in the future be a circuit split, which could then be appealed to the SCOTUS, it is unlikely SCOTUS would hear that case.
And given what happened today, it is even less likely that a competent lawyer would counsel their client to appeal a similar case up to a federal appeals court (because it looks like it would be a loser of a case).
So while the SCOTUS did not affirmatively speak today, their unanimously declining to hear the case does actually say something new, and this is being hailed as a landmark-ish case in the legal accessibility community.
FWIW, IAAL, and I run an assistive technology startup.