I really like the idea of creating a decentralized network that has a fair monetization model built right in, instead of relying on donations like the Fediverse. Crypto got a very bad rep, but this kind of stuff is exactly what it's good for imo.
It also has some core features that are missing from other similar messengers, like multi-device sync. And lastly, the devs seem pretty capable and open as well. They are very transparent with their work and seem to have the right ideas about where things should go and which trade-offs to make. E.g. their reasoning for not using the Signal protocol seems solid to me.
So I'm hopeful, but time will tell if it all works out.
Welcome to the Linux community. :)
You will probably never understand everything about Linux and all of its included and associated systems. That's completely fine, no one does! That's why we are many, and it's what asking for advice or help is for. You can just learn whatever interests you at your own pace, and know that there will always be interesting things you haven't seen yet.