IDK about Lemmy devs, but point 2 is so, so common. Making a point about UX or accessibility in 99% of FLOSS project discussion spaces is incredibly stressful; you can have user research, industry best practice, and years of experience on your side, but you’re inevitably met with dismissal and argument. Devs often treat designers as though they’re a bunch of artsy crystal-healing crusties, despite the fact that good UX people base their work on actual research and theory grounded in human behavior and psychology. (Calling use of basic design principles “eye candy” for example) Of course, if a dev makes a decision on technical grounds, it must be treated as scripture as far as any remaining designers on the project are concerned. It’s no wonder so many FLOSS projects have abominable UX.