Never even heard of that
I use it to get around Amethyst/GrapheneOS bugs, and I started noticing I make different typos, then I started noticing others. Adds noise to the stylometry data if you mix it up, doesn't have to be a bad thing!
You're not adding noise. It's like adding noise to a random number by "randomly" changing digits. You're reducing randomness. You're adding to your fingerprint.