Their other projects are in active development, so I wouldn't consider it to be abandoned.
I haven't had any issues besides the desktop being occasionally unresponsive. Same thing used to happen to me in Nova.
It's FOSS and suits my needs. But I can see why others may want to stay away from it.
I asked many years ago to add an option to send donations. They said it wasn't needed. I wonder if additional revenue may have helped.