Kids prefer messaging because it's asynchronous, not because they prefer text.
Virtual medicine is the one thing that is really useful because the majority are of doctor visits are a waste of time and I go to the doctor a lot, if not once a week sometimes 3 in a single week. That doesn't even count the 2 times a week I usually have to go for a blood draw. Outside of the lab I honestly can't recall the last time in person part being necessary