[goto_self]

The high-bandwidth, low-effort interactions you're talking about might only work with quick, two-way exchanges, as in a spoken conversation. In that regard, I definitely have a weird English variant among friends. I enjoy the broken English of so many memes.

There's an additional layer of language where you can switch to a different variant of the rules as part of communication. Speaking in another register defines the tone of the interaction.

But I'd still like to defend standard English as the default even in informal groups, because the standard makes it readily accessible to many people and ensures as much permanence as one can get from language.

All that said, I have one more flip-flopping disclaimer. I think some of the rules agreed upon before are really dumb. Putting punctuation in quotation marks if the punctuation is not from the quote is monstrous. I will not follow that rule in any context.