Probably irrelevant but I gave up on next cloud because I found the syncing apps to be unusable on Mac, windows and Linux. Nothing ever worked the way it was meant to. They crashed all the time, were unresponsive, and the UX was terrible
But like anything so ambitious in scope, it doesn’t take much before you begin to push up against its boundaries (even as generous as they are). This is the kind of software that the biggest players in the industry devote armies of highly paid developers and billions of capital to. The accomplishments of the OSS community should not be diminished. I personally will continue to use and support these tools in my own capacity. But it’s kind of inevitable that, while they offer lots of cool major features, they won’t ever be quite as polished or refined as competing solutions from industry giants, or even other OSS apps that take a narrower, more uni-tasked approach.
Having read through most of these comments, I think the truth is probably somewhere between competing ideas, and everything else is subjective and context-dependent.
If you leave the beaten path it tends to break.
It's free and it feels wrong to complain but it's not good software IMHO.