Decorative emojis (the stuff AI loves to add to bullet lists) don't do much. On the other hand I'd say emojis at the start/end of a sentence are as meaningful as emoticons or /s or any other Internet shorthand for conveying intent.

Decorative emojis in headings and lists help me skim documents faster than I'd otherwise be able to.

I'm curious how. I rarely see the emojis line up with the content of the header in a way that makes parsing reading the header any easier.

How?

/s is incredibly dumb as well. “Hey look everyone, I made a joke! Aren’t I clever?”

/s is the sometimes necessary clue x four that you hit people over the head with so they won’t run away with their pearl clutching.