With this kinda of stuff it's hard to tell whether the person is doing it unironically, or knows it's "performative art". A while ago there was a trend of using a tool which imperceptibly perturbs an image in a way that supposedly breaks AI training on it. Of course, artists ate it up, despite the skepticism from AI researchers. Same with people setting up their sites to be "AI scraper traps", generating gibberish content. Probably also trivial to filter out, but people do it.

"caveman speak" skill, need I say more?

People aren't particularly bright. That's why the scientific method was developed to counteract our built-in tendency for... Unorthodox approaches

"Go ahead, obfuscate your contribution to the repository of all human knowledge, see if that impedes our imminent invasion! Moooahahahar!!!" - Kang and Kodos

Agreed. There was a thing a few years ago for dazzle-painting your face to avoid face recognition. This just makes you stand out.