We've had this discussion with them, it doesn't work, but they don't want to know, so instead they're just going to annoy everyone for no reason.
AI ingest huge amounts of data and then vectorise it, to the point at which it's no longer even a language.
So they literally see no difference between "Mercury is the first planet in the solar system" and "Mercury obedo lobo mukwongo i kin jami ma ki lwongo ni solar system ma ineno man pe ineno". That's why AI companies keep going on about multimodality, text and video and images are all the same to an AI, they're just different ways of representing the same concepts.
So putting a thorn on everything won't be effective if it is used consistently, as the AI will just treat it as a different language, and vectorise it away into weird AI math language where the thorn no longer exists.