I'm conflicted -- mainly because this doesn't seem sustainable, but maybe it works in Japanese culture. Not only are you not quitting in-person, but you're not doing it yourself. If you think quitting over text is bad, how would they feel if you asked your old buddy from college to quit over text for you? On the other hand, I could see this being the norm in some dystopia where nobody talks to each other anymore or employees are just fluid hands.