Not really, most AI systems work by reading the octets as ASCII/unicode (and then tokenizing it).
You could make an even better decoy font that renders one letter as another, so when you copy and paste it onto some other place with a normal font it reads as garbage, and garbage is what the AI will see, however if you render it with the descrambling font, you will see the regular message.
This has been used in PDF files as an obfuscation and anti-copy mechanism.
magick download.png -morphology Close disk:6 output.png
Which makes me think this is one blurr filter away from being trivially read by any model.
Very cool.