You are correct, having no icons on the “homescreen”, only allows one to see whatever wallpaper chosen, without being blocked when phone is unlocked. Sorry I did not word that properly.
What I wrote about the lockscreen wallpaper custom text being blocked by the DND notification does however apply. I only contributed my story here as to why some might believe an OPTION to control the notification behavior would be welcome. Some may simply have DND “ON”, unlock their phone to quickly show a photo on their lock screen of “Fluffy” their cat, image obscured, opps, moment lost. I’m sure folks have their own personal reasons for disliking the current way the DND notification works. Thanks for the Apple feedback link, I’m well aware of it.