Honestly it wasn't meant as a canard — this was basically my thought process when I was thinking through an app idea. I'm surely uninformed and some of that is a function of my own laziness, but it's also a reflection of how much diversity there is. I feel like it's akin to Kissinger's rhetorical (at the time) question "Who do I call if I want to call Europe?"
You just pick whoever people listen to at the time you make the call. In this case, GTK and Qt have been calling the shots and all Linux installs worth targeting are going to support them or support installing the dependencies necessary (which you can specify in your package, as spotify does).
Flailing about and perpetuating this myth that Linux is impossible to target just makes things worse.
