Some elements of this can be seen in the screenshot of Andre Staltz's twitter feed I posted recently, but in this guy's blog post every heading ends in emojis.
This is like inserting funny gifs in presentation slides — a technique that has some merit, because, well, a funny gif can be an apt metaphor for the point the speaker is trying to make, — but which is now atrociously abused. Too often I see people speak in front of a slide with the same gif running over and over again in a loop. Instead of reinforcing the message, it distracts from it.
I remember, in the mid-nineties people discovered PowerPoint animated slide transitions. I clearly remember one of our professors presenting something or other about evidence-based medicine using PowerPoint with animated slide transitions likely set at random. I remember noticing that I wasn't paying attention to his talk, but was just wondering how the next slide will appear. I also remember thinking that no-one should ever use random slide transitions.
Since then people have gone much easier on slide transitions. I hope they will dial down on animated gifs as well (or at least learn how to stop the loop after one or two runs). Then, hopefully, the time will come for emojis.