Not wanting to use the browser is its own purpose? Of course I understand if you want to use a specialized app that offers more features, better usability, nicer layouts than the original websites of the services they are for. But using a specialized app just because it’s not the browser (which, by the way, it often really is anyway), why that?
You click a link to some fediverse content somewhere, and actually land on the instance where you have a login and can interact with it.