SUMMARY Desktop files (*.desktop) have three properties: Name, Description (GenericName) and Comment. If the Name and Description are the same, a description won't be shown when the user hovers over the app's icon in the task manager. Info Center's desktop file has the same name and description. So the desktop file description could be changed to something like "System Information Viewer".
Yeah, fair enough!
Since this is a Plasma-only application with a generic name (not a "brand" name), it doesn't really need a description. The same was decided for Welcome Center in BUG 504401. So instead of changing the description, it should just be removed.
After doing a bit more research here, I realize I was wrong. It's actually the opposite: we should fix Task Manager (bug 504431) rather than reducing useful metadata. The metadata can't assume the anything about the presentation layer, so we should be good citizens and set everything.