The default web interface is very poorly designed and looks uninviting. Sure, there are great alternative interfaces but people will be turned off before they could check them out. Also, it's usually the first thing you see when someone's sharing a link.
There not being an official app is also something that will confuse non-tech users.
Is Jerboa official? I used it at the start but it seemed to just stop getting developed. Myself and plenty of others have since moved on to other 3rd party apps. I'm using Voyager now.
The default web interface is very poorly designed and looks uninviting.
Disagree. I find it rather clean and functional, even on mobile. Maybe because I liked old reddit. Maybe younger people are used to Instagram-like feeds so they don't like the compact forum style.