Most Fediverse software supports image uploads, so there’s no reason to use Imgur for image hosting. Hell, even on my small single-user server (atomicpoet.org), image hosting is easy peasy. Not only is Imgur not needed, they’re an annoyance for those of us who are used to seeing images natively on the Fediverse.
I know habits are hard to break, but just remember: this isn’t Reddit 🙂
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?