How can I Hide Desktop Icons on Mojave? The following commands used to work to hide the desktop items. In Mojave, it just refreshes the dock and everything remains. Is there another way to do this?

defaults write com.apple.finder CreateDesktop false; killall Finder
Mojave does support hiding Desktop items. If for any reason true or false does not work, try using 1 or 0. Example below worked on macOS 10.14.5 and hides items from view:

$ defaults write com.apple.finder CreateDesktop 0; killall Finder