You do realize that a comma is punctuation, don't you? Semicolons and colons are also punctuation. Also, it doesn't matter that he is typing; he is still using the English language, so he should make it readable.
English
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Yes, I do realize this. Although, grammar's sole purpose is uniformization of language to facilitate comprehension. You're saying his lack of proper punctuation is so drastic that you can no longer comprehend his one sentence long post. 0.o