I think its basic courtesy to put even a little effort to something as important as a breakup. Not doing it face to face or at least in a call removes the interaction completely. It's taking the easiest possible path in a situation that will certainly affect the other person in a significant manner. It's cold. Using a LLM for said text like in the meme is even lower effor and leaves the recipient feeling utterly worthless. Basically the same thing as getting fired via email.