The open source music notation software MuseScore used to be really, really bad. A musician and UX designer gave it a scathing review in a humorous YouTube video. And then the company behind MuseScore hired that YouTuber and spent a lot of effort doing a major redesign, and now it's actually quite good.
All it takes is for the people in charge of the project to put aside their hubris and trust that sometimes, programmers aren't the best designers, and to get people who are trained in designing and evaluating user interfaces to do the job. And to perform adequate user testing.