Humorous take: Sensitive snowflakes gonna sensitive.
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Serious take: The new generation rejects what was acceptable to the previous generation as part of the process of developing their own identity :)
Humorous take: Sensitive snowflakes gonna sensitive :)
The surprising part to me is that I have an old pamphlet from Hayes that has a catalog of emoticons as we used to refer to them. This means that :) has changed its meaning in a generation or so... which I never considered that "pictograms" could do that.
It could also be that the context sets the tone and the emoticons are nuanced.
The plain smiley can sound like sarcasm/irony or a passive-agressive tone, because it looks a little lifeless compared to modern emojis that are more expressive. It used to be the most expressive you could be, but now it's the most plain you can be. The least amount of smiling you could be smiling. It can look like a fake smile as a result.