It's not true, above screen shot is valid question and I have same situation, and the solution is not appropriate here.
@Momonga The link and descriptor which you have mentioned for secured folder enabled where duplicate apps icon comes with secure folder only. Above issues is something different. If we have two different or dual apps then two circle in the icon is valid but there are still some apps in the Samsung phones does shows duplicate but they are not exist in the phone
I have same issues in my new samsung s22 ultra phone, No secure folder as well. but I see two apps but 2 apps not exist, I think I have transfer all data and apps from existing phone to new phone could be an issues. but Samsung should reply and fix this issues
I had the same, but fixed it. If you're not using any dual app (I see you are actually using Dual whatsapp though), you can remove all the dual apps related to this service by tapping the 3 dots on the upper right corner and then tap on delete all my data. It will remove dual Chrome, dual Google Play services and dual settings.