This just sounds like the heavy cost of software development. Part of providing a good user-experience is documentation, patience, user-research, understanding the sophistication level (or lack thereof) of your users, etc. From what I've observed most FOSS software doesn't have time/interest for that kind of hand-holding (and I can't blame them, they aren't getting paid and probably don't like that part).
The counterpoint is that a lot of great FOSS software that is 80-90% great but with a terrible UI, terrible documentation, or glaring incompatibility that makes the experience entirely unpalatable for a swath of users. And so a lot of people don't use it. Which is also fine.
The counterpoint is that a lot of great FOSS software that is 80-90% great but with a terrible UI, terrible documentation, or glaring incompatibility that makes the experience entirely unpalatable for a swath of users. And so a lot of people don't use it. Which is also fine.