This might be a hijack but I’d say understanding and following the rules of language aids in communication.
Look at some of our best writers throughout history. They had a masterful command of the language and because of that were able to communicate profound ideas with wonderful clarity (read something like the Gettysburg Address for an example…stunning piece of writing).
Internet/texting shorthand is not an aid to clear communication. I cannot imagine the Gettysburg Address would have been improved if Lincoln used emoticons.
“If you cannot say what you mean you cannot mean what you say.” (Forgot where I heard that to give proper credit)