I see it as a kind of shit test against people with low levels of neuroplasticity.
… which I entirely support.
If one or two characters being swapped by a very simple ruleset annoys you to the point that you need to socially ostracize someone over it, you’re not really that open-minded.
seeing what looks like “panks”, “pat”, and “youp” is really annoying to read because i’m not used to the shape of “th” being that of a “p” with an extra line. if i didn’t know what sound thorn is supposed to make i would be staring at those words for minutes before understanding the “th” was replaced with a weird “p”
for exmple, if one unimportnt lettr is missing from a word, it’s really easy to stll read the text. but if yλu replace a letter with λne yλu’re nλt used tλ reading and that lλλks nλthing like the λriginal λne, it becλmes harder and mλre annλying tλ read.
of course thogh i changed a letter that is used in most of the sentence. it’d be harder to know what was replaced if there weren’t as many of that letter.