That's kind of a false dichotomy you've got going there. Introverts and non native speakers are all slow deep thinkers who need a thinkers medium to communicate, which is slow by your definition. Everyone using a quick communication medium is a moron though right? I assume that's what you meant by people who lack intellectual ability.

They are just different mediums. Long form is better for getting across new ideas that have to be explained for the first time, but a medium like emoji allows for incredibly dense communication with single glyphs once the meaning has been established