This. Open source apps are generally awful at presenting themselves to a broader audience.
Even for me, who’s technical enough, an app being FOSS is not enough to even bother checking out. Yes, I’ve said it. Sorry, tinfoils, but I do put features above else. And, want it or not, general public does the same: if the featureset is not clear enough at first glance, and an app doesn’t explicitly provide clarity on what it does and how it is better than competition, most people aren’t even checking it out.