Yes, all-caps and lowercase have different word shapes. This is something that slightly slows down native or highly experienced speakers (readers), because they have so much exposure to reading the language that they use the word shape to help.
This is not something ESL students are doing to any appreciable degree. They have not put in the 1000's of hours of reading in the target language to read even faster by identifying word shapes. That is a level of optimization they are nowhere near.
All it takes is one ultra-rich individual to say, "I'm having my bots build a bot-building factory and giving them to everyone who wants a bot. For free (after all, bots are doing all the work!) Or a hundred bots, who cares. They're free, bots are doing all the work anyway."
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