A poorly designed tool will do that, yes. An effective tool would do the same thing a person could do, except much quicker, and with greater success.

An LLM could be trained on the way a specific person communicates over time, and can be designed to complete a forensic breakdown of misspelt words e.g. reviewing the positioning of words with nearby letters in the keyboard, or identifying words that have different spellings but may be similar phonetically.

Trying not to be too douchey here, but ironically, your message is actually a very good example of where this technology could be beneficial.

IT is ACTUALLY not EASY to read a MESSAGE when THE CASE randomly SWITCHES back AND forth.

I don’t use WhatsApp, but this immediately made me think of my dad who doesn’t use any punctuation and frequently skips and misspells words. His messages are often very difficult to interpret, through no fault of his own (dyslexia).

Having an LLM do this for me would help both him and me.

He won’t feel self conscious when I send a, “What you talkin’ about Willis?” message, and I won’t have to waste a ridiculous amount of time trying to figure out what he was trying to say.