To be fair Poe's law is a pretty common problem in internet communication. Obviously ambiguity of intent is pretty easily avoided with good writing but it's also convenient for a lot of people to be able to dodge that with a few relatively standardized characters. Although I can agree in the sense that it often feels like a lazy fix for otherwise bad jokes or dialogue, too often I see something in the vein of "WE NEED TO BLOW UP ORPHANAGES!!! /j" and because there's a tone indicator in there it somehow manages to write off the lack of actual quality.

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