Right, but its not your responsibility to slow down at all. Its kind of you to do so when the merging vehicle picks up on your intention, but when they don’t, it makes a miscommunication like you describe.
Basically, i’d just describe it as being predictable. And bending the rules (even to be kind) is not predictable, usually.
No. It wasn’t executed well. Plenty of other popular comics, tv shows, whatever have successfully blended sadness or other powerful emotions to their comedy. This one just failed. So it got memed.