(check out that username) vouched
I think it's perfectly reasonable to have people socially pressure others to keep to the agreed upon conventions of communication. (It's kind of what this place is known for.)
If someone wants to do it in a funny way, all the better. Humor wins hearts and minds.
I don't understand the ignoring of basic writing conventions thing. If you think that's going to make your writing stand out, or be more expressive or whatever, you're wrong.
It is less expressive, and it only stands out for being disorienting and unpleasant to look at and read.
Seeing people write like this brings to mind this quote.
Be regular and orderly in your life, so that you may be violent and original in your work.
Write with the standard conventions, so that what stands out are your ideas, not the reader's effort to piece together your loose ends.