But you're really talking about KDE here. Not linux. You have the context of a KDE developer. You're basically saying "The KDE project is doing great!", but that doesn't invalidate anything I said in my comment.
I've been dealing with the evangelism portion a ton more; what I've seen is that people no longer care.
Linux support for some of the newer tech is abysmal. Take for example hi-dpi and touch screen support; we're only now starting to get somewhere with both of those, and those don't even qualify as "newer tech". Things like UEFI have truly made Linux harder to install and deal with. We're going to catch up eventually but in the mean time, for users it's a terrible experience.
Desktop devs are so focused on their "experience" within the DE. Tell me, who's working on making GNOME/KDE apps look good on KDE/GNOME? Who's working on making them behave well? The rare times there's activity in XDG, it's "FYI" activity. "Hey, so, we're doing this in (gnome/kde) now. Comments welcome, whatever." - nobody ever replies. I worked for over a year on porting Android intents to XDG. Nobody helped. The GNOME project showed some interest in it; some good stuff came out of that, but intents are still not on Linux and, in 2016, it's still not possible to do something as simple as an "Edit this picture" action.
It's been a frustrating past few years. I saw a massive amount of new people interested in Linux, because "Windows 8 sucks". I also saw most of them go to macOS instead; the few that stayed went back to Windows when 10 was released. Linux really missed the boat there.
We are lacking a project that is actively working on the health of "Linux on the desktop". We need people to work on improving the experience of developing apps on Linux, improving the portability across desktops, creating clear specs, guidelines and documentation and we need all that not to suck. But who's going to do that? Mozilla doesn't seem interested. Valve, RH etc only have to care about the distro/DE they're shipping. Google's no longer looking at Linux as anything else than a kernel. Yeah, we're pretty screwed.
