Exactly. It would be amazing to have some of the many incredible UX/UI designers out there help with open source projects like these. So many potential adopters are lost just because of the interface, no matter how awesome the software is.
Here is a thought: do you want committed UX people working on open source? PAY THEM!
If every developer set aside a budget of 5-10% they spend on proprietary services to contribute to the funding of open source projects, there would be enough to attract hordes of UX professionals.
It amazes me how much of a premium people for, e.g, Apple products yet can not plan to spare 5-10 bucks a month to support R&D of open source.
This, 100%. UX doesn't respect development because devs tend not to care about UX. Development doesn't respect UX because UXers tend not to care about development.
IMHO, devs tend to assume everyone is a programmer. And many people are very much not.
Which is why even graphical OSS tends to look and work like... git.