I believe newcomers to Linux would like to see what “KDE” and “GNOME” means, since not everyone has a Steam Deck, and not everyone with a Steam Deck used the Desktop Mode.
I also think that if the KDE screenshot had the application launcher open, people would be better able to identify it as “This is Windows 7-like!”.
I’m not using Bazzite right now, but it would look like this, you can eve crop the top out.