1. Sapir-Whorf is racist pseudoscience that was never substantiated and was universally rejected from day 1 by everybody but science-illiterate journalists

2. Even if there was substance to it, it's not relevant to this. People have no difficulty understanding what "Free" means when you explain what you mean. Just as in the above sentence you experienced no confusion at all over whether I used "that" in the indicative or grammatical sense.