For me personally, I won’t delete my account right away but I will nonetheless try to come more and more to lemmy because the problem on Reddit isn’t just a u/spez one but rather a systematical problem. It can reappear again. They showed their true colors.
I wouldn’t say it’s not possible it’s just too hard for the reward. The app would not be user-friendly because of the very different kinds of services that exists. OP just imagine you had an one app that basically lets you access discord, twitter, instagram, Facebook, Reddit and others. It would be possible but it’s a lot of work for a really crappy app. That app would be messy and cluttered and not a good experience.