This blogger lets the reader know they don't know wtf they are talking about in the first fucking paragraph.
Making “anti-ai” fonts that obfuscate or scramble text is a fools errand. For fonts that scramble text, it's an accessibility problem, since the scrambled text is what screen readers and other accessibility tools will parse.
The text scambling techniques to stop AI do not affect the normal readable font on the page and doesn't stop text to voice readers. 🤦♂️
Try looking up how ShieldFont actually works. Or look at the code yourself; it's open source.