I also noticed that Windows 11 on my computer installed the HP Smart app on November 28 without telling me… however, there is a networked HP printer at home (my mom’s), so I assumed that that was the reason. It did not rename the other printer/scanner (a very old Canon) I installed. Still, it’s really bad practice to silently install apps, in my opinion (automatic installation of drivers is useful, but it can sometimes also cause problems). I always turn off automatic updates of drivers in Windows Update (with the group policy editor). Not to be confused with Advanced system settings > Hardware tab > Device installation settings > “Do you want to automatically download manufacturers’ apps and custom icons that are available for your devices?”
Since then, I’ve found out that Windows (10/11) has a setting that should prevent automatic installation of network printers : Settings > Network & Internet > Advanced network settings > Advanced sharing settings > checkbox “Set up network connected devices automatically”. That setting can also be accessed from the Control Panel > Network and sharing centre > Change advanced sharing settings