One could achieve the same with a Telegram bot, right? And unlike your app, which must be installed separately, there are already 1 billion users who already have the app installed.
For example, one of our use cases is youth sports where we've personally experienced problems with messages getting lost in group chats; parents not wanting their phone number/email or name on communication threads; coaches managing phone number lists for parents and athletes, etc. They view telegram and signal as something you use when you have something to hide - so they stick with options they don't like, text or whatsapp, because they don't have an alternative.