But even that doesn't make sense here. A web app is a perfectly realistic alternative to a mobile app, and they could still fire the receptionists. I have the MyChart app on my phone, for emergencies, but do all my communicating with the doctor's office via their website on my laptop at home. If I were a suspicious person, I'd think they want you to use the app so they can train their AI with your medical data (that's tied only to their app).