*Why* do I get so much more info about Gnome apps than KDE ones,
*who* could change that, and *where* can I make the request and expect it
to be on topic?
All this technical mumbo-jumbo aside. Basically, it's because GNOME
treats the KDE apps unfairly.
Yes, it's lame. Yes, it's a known problem in GNOME, and they're
working (talking about working?) on it.
No, there's nothing you can do - aside from helping - that will make
anyone move faster to solve it.