My phone runs fine. I use some apps, and many others I use websites. My ebooks, music, podcasts, and video stuff uses apps, as well as some games, my banking app, and this lemmy app. I don’t use apps for just about every other social media (mostly because I barely use em), for many websites etc. Email I do use the apps, as well as my robovac, and some other communication based ones. Also MFA apps.
Use of apps can be decided on a per use basis, as long as the person knows the possible issues stemming from them. It doesn’t need to be all or nothing, and your solution doesn’t necessarily work for everyone. It doesn’t make you better than them, nor them better than you, just different. Stop assuming everyone should do things like you do.